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Finding the Fourth Proportional to 502,990.05, 754,485.29 and 123,918.17

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Solution

The fourth proportional to 502,990.05, 754,485.29 and 123,918.17 is: 185,877.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,990.05 : 754,485.29 = 123,918.17 : x
  2. Step 2: Convert to fraction form
    502,990.05/754,485.29 = 123,918.17/x
  3. Step 3: Cross multiply
    502,990.05x = 754,485.29 × 123,918.17
  4. Step 4: Simplify right side
    502,990.05x = 93,494,432,966.09
  5. Step 5: Solve for x
    x = 93,494,432,966.09/502,990.05
  6. Step 6: Final answer
    x = 185,877.30

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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.