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Finding the Fourth Proportional to 527,562.80, 791,344.20 and 172,491.20

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Solution

The fourth proportional to 527,562.80, 791,344.20 and 172,491.20 is: 258,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,562.80 : 791,344.20 = 172,491.20 : x
  2. Step 2: Convert to fraction form
    527,562.80/791,344.20 = 172,491.20/x
  3. Step 3: Cross multiply
    527,562.80x = 791,344.20 × 172,491.20
  4. Step 4: Simplify right side
    527,562.80x = 136,499,910,671.04
  5. Step 5: Solve for x
    x = 136,499,910,671.04/527,562.80
  6. Step 6: Final answer
    x = 258,736.80

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Double scale
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Similar ratio
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1.5x scale

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.