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Finding the Fourth Proportional to 144,864.80, 217,263.97 and 39,691.97

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Solution

The fourth proportional to 144,864.80, 217,263.97 and 39,691.97 is: 59,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,864.80 : 217,263.97 = 39,691.97 : x
  2. Step 2: Convert to fraction form
    144,864.80/217,263.97 = 39,691.97/x
  3. Step 3: Cross multiply
    144,864.80x = 217,263.97 × 39,691.97
  4. Step 4: Simplify right side
    144,864.80x = 8,623,634,979.32
  5. Step 5: Solve for x
    x = 8,623,634,979.32/144,864.80
  6. Step 6: Final answer
    x = 59,528.85

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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.