Home / 328,543,449.20-492,783,146.40-86,206,353.20

Finding the Fourth Proportional to 328,543,449.20, 492,783,146.40 and 86,206,353.20

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Solution

The fourth proportional to 328,543,449.20, 492,783,146.40 and 86,206,353.20 is: 129,301,126.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,543,449.20 : 492,783,146.40 = 86,206,353.20 : x
  2. Step 2: Convert to fraction form
    328,543,449.20/492,783,146.40 = 86,206,353.20/x
  3. Step 3: Cross multiply
    328,543,449.20x = 492,783,146.40 × 86,206,353.20
  4. Step 4: Simplify right side
    328,543,449.20x = 42,481,037,969,565,704
  5. Step 5: Solve for x
    x = 42,481,037,969,565,704/328,543,449.20
  6. Step 6: Final answer
    x = 129,301,126.15

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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.