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Finding the Fourth Proportional to 437,480.10, 656,220.15 and 156,960.90

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Solution

The fourth proportional to 437,480.10, 656,220.15 and 156,960.90 is: 235,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,480.10 : 656,220.15 = 156,960.90 : x
  2. Step 2: Convert to fraction form
    437,480.10/656,220.15 = 156,960.90/x
  3. Step 3: Cross multiply
    437,480.10x = 656,220.15 × 156,960.90
  4. Step 4: Simplify right side
    437,480.10x = 103,000,905,342.14
  5. Step 5: Solve for x
    x = 103,000,905,342.14/437,480.10
  6. Step 6: Final answer
    x = 235,441.35

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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.