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Finding the Fourth Proportional to 603,432.75, 905,149.13 and 154,154.61

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Solution

The fourth proportional to 603,432.75, 905,149.13 and 154,154.61 is: 231,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,432.75 : 905,149.13 = 154,154.61 : x
  2. Step 2: Convert to fraction form
    603,432.75/905,149.13 = 154,154.61/x
  3. Step 3: Cross multiply
    603,432.75x = 905,149.13 × 154,154.61
  4. Step 4: Simplify right side
    603,432.75x = 139,532,910,356.22
  5. Step 5: Solve for x
    x = 139,532,910,356.22/603,432.75
  6. Step 6: Final answer
    x = 231,231.92

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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.