Home / 342,143,998.20-513,215,997.30-99,806,902.20

Finding the Fourth Proportional to 342,143,998.20, 513,215,997.30 and 99,806,902.20

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Solution

The fourth proportional to 342,143,998.20, 513,215,997.30 and 99,806,902.20 is: 149,710,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,143,998.20 : 513,215,997.30 = 99,806,902.20 : x
  2. Step 2: Convert to fraction form
    342,143,998.20/513,215,997.30 = 99,806,902.20/x
  3. Step 3: Cross multiply
    342,143,998.20x = 513,215,997.30 × 99,806,902.20
  4. Step 4: Simplify right side
    342,143,998.20x = 51,222,498,849,996,568
  5. Step 5: Solve for x
    x = 51,222,498,849,996,568/342,143,998.20
  6. Step 6: Final answer
    x = 149,710,353.30

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.