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Finding the Fourth Proportional to 498,311.70, 747,467.55 and 143,304.90

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Solution

The fourth proportional to 498,311.70, 747,467.55 and 143,304.90 is: 214,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,311.70 : 747,467.55 = 143,304.90 : x
  2. Step 2: Convert to fraction form
    498,311.70/747,467.55 = 143,304.90/x
  3. Step 3: Cross multiply
    498,311.70x = 747,467.55 × 143,304.90
  4. Step 4: Simplify right side
    498,311.70x = 107,115,762,506.00
  5. Step 5: Solve for x
    x = 107,115,762,506.00/498,311.70
  6. Step 6: Final answer
    x = 214,957.35

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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.