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Finding the Fourth Proportional to 577,154.52, 865,731.72 and 156,430.38

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Solution

The fourth proportional to 577,154.52, 865,731.72 and 156,430.38 is: 234,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,154.52 : 865,731.72 = 156,430.38 : x
  2. Step 2: Convert to fraction form
    577,154.52/865,731.72 = 156,430.38/x
  3. Step 3: Cross multiply
    577,154.52x = 865,731.72 × 156,430.38
  4. Step 4: Simplify right side
    577,154.52x = 135,426,741,937.65
  5. Step 5: Solve for x
    x = 135,426,741,937.65/577,154.52
  6. Step 6: Final answer
    x = 234,645.55

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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.