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Finding the Fourth Proportional to 284,691.26, 392,874.03 and 155,630.30

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Solution

The fourth proportional to 284,691.26, 392,874.03 and 155,630.30 is: 214,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,691.26 : 392,874.03 = 155,630.30 : x
  2. Step 2: Convert to fraction form
    284,691.26/392,874.03 = 155,630.30/x
  3. Step 3: Cross multiply
    284,691.26x = 392,874.03 × 155,630.30
  4. Step 4: Simplify right side
    284,691.26x = 61,143,101,186.74
  5. Step 5: Solve for x
    x = 61,143,101,186.74/284,691.26
  6. Step 6: Final answer
    x = 214,769.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.