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Finding the Fourth Proportional to 576,976.76, 865,468.38 and 156,256.28

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Solution

The fourth proportional to 576,976.76, 865,468.38 and 156,256.28 is: 234,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,976.76 : 865,468.38 = 156,256.28 : x
  2. Step 2: Convert to fraction form
    576,976.76/865,468.38 = 156,256.28/x
  3. Step 3: Cross multiply
    576,976.76x = 865,468.38 × 156,256.28
  4. Step 4: Simplify right side
    576,976.76x = 135,234,869,516.43
  5. Step 5: Solve for x
    x = 135,234,869,516.43/576,976.76
  6. Step 6: Final answer
    x = 234,385.30

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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.