Home / 342,143,999.40-513,215,999.10-99,831,397.80

Finding the Fourth Proportional to 342,143,999.40, 513,215,999.10 and 99,831,397.80

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Solution

The fourth proportional to 342,143,999.40, 513,215,999.10 and 99,831,397.80 is: 149,747,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,143,999.40 : 513,215,999.10 = 99,831,397.80 : x
  2. Step 2: Convert to fraction form
    342,143,999.40/513,215,999.10 = 99,831,397.80/x
  3. Step 3: Cross multiply
    342,143,999.40x = 513,215,999.10 × 99,831,397.80
  4. Step 4: Simplify right side
    342,143,999.40x = 51,235,070,563,476,544
  5. Step 5: Solve for x
    x = 51,235,070,563,476,544/342,143,999.40
  6. Step 6: Final answer
    x = 149,747,096.70

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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.