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Finding the Fourth Proportional to 605,254.20, 908,318.70 and 338,731.80

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Solution

The fourth proportional to 605,254.20, 908,318.70 and 338,731.80 is: 508,342.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,254.20 : 908,318.70 = 338,731.80 : x
  2. Step 2: Convert to fraction form
    605,254.20/908,318.70 = 338,731.80/x
  3. Step 3: Cross multiply
    605,254.20x = 908,318.70 × 338,731.80
  4. Step 4: Simplify right side
    605,254.20x = 307,676,428,224.66
  5. Step 5: Solve for x
    x = 307,676,428,224.66/605,254.20
  6. Step 6: Final answer
    x = 508,342.49

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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.