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Finding the Fourth Proportional to 486,113.40, 729,170.10 and 308,747.70

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Solution

The fourth proportional to 486,113.40, 729,170.10 and 308,747.70 is: 463,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,113.40 : 729,170.10 = 308,747.70 : x
  2. Step 2: Convert to fraction form
    486,113.40/729,170.10 = 308,747.70/x
  3. Step 3: Cross multiply
    486,113.40x = 729,170.10 × 308,747.70
  4. Step 4: Simplify right side
    486,113.40x = 225,129,591,283.77
  5. Step 5: Solve for x
    x = 225,129,591,283.77/486,113.40
  6. Step 6: Final answer
    x = 463,121.55

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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.