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Finding the Fourth Proportional to 319,303,487.80, 478,955,231.70 and 250,428,734.20

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Solution

The fourth proportional to 319,303,487.80, 478,955,231.70 and 250,428,734.20 is: 375,643,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,303,487.80 : 478,955,231.70 = 250,428,734.20 : x
  2. Step 2: Convert to fraction form
    319,303,487.80/478,955,231.70 = 250,428,734.20/x
  3. Step 3: Cross multiply
    319,303,487.80x = 478,955,231.70 × 250,428,734.20
  4. Step 4: Simplify right side
    319,303,487.80x = 119,944,152,413,098,704
  5. Step 5: Solve for x
    x = 119,944,152,413,098,704/319,303,487.80
  6. Step 6: Final answer
    x = 375,643,101.30

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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.