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Finding the Fourth Proportional to 577,128.96, 865,727.04 and 156,438.72

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Solution

The fourth proportional to 577,128.96, 865,727.04 and 156,438.72 is: 234,667.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,128.96 : 865,727.04 = 156,438.72 : x
  2. Step 2: Convert to fraction form
    577,128.96/865,727.04 = 156,438.72/x
  3. Step 3: Cross multiply
    577,128.96x = 865,727.04 × 156,438.72
  4. Step 4: Simplify right side
    577,128.96x = 135,433,230,006.99
  5. Step 5: Solve for x
    x = 135,433,230,006.99/577,128.96
  6. Step 6: Final answer
    x = 234,667.19

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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.