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Finding the Fourth Proportional to 502,991.05, 754,486.79 and 123,919.17

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Solution

The fourth proportional to 502,991.05, 754,486.79 and 123,919.17 is: 185,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,991.05 : 754,486.79 = 123,919.17 : x
  2. Step 2: Convert to fraction form
    502,991.05/754,486.79 = 123,919.17/x
  3. Step 3: Cross multiply
    502,991.05x = 754,486.79 × 123,919.17
  4. Step 4: Simplify right side
    502,991.05x = 93,495,376,792.76
  5. Step 5: Solve for x
    x = 93,495,376,792.76/502,991.05
  6. Step 6: Final answer
    x = 185,878.81

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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.