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Finding the Fourth Proportional to 486,098.70, 729,148.05 and 131,148.60

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Solution

The fourth proportional to 486,098.70, 729,148.05 and 131,148.60 is: 196,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,098.70 : 729,148.05 = 131,148.60 : x
  2. Step 2: Convert to fraction form
    486,098.70/729,148.05 = 131,148.60/x
  3. Step 3: Cross multiply
    486,098.70x = 729,148.05 × 131,148.60
  4. Step 4: Simplify right side
    486,098.70x = 95,626,745,950.23
  5. Step 5: Solve for x
    x = 95,626,745,950.23/486,098.70
  6. Step 6: Final answer
    x = 196,722.90

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Similar ratio
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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.