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Finding the Fourth Proportional to 254,472.60, 381,708.90 and 213,000.60

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Solution

The fourth proportional to 254,472.60, 381,708.90 and 213,000.60 is: 319,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,472.60 : 381,708.90 = 213,000.60 : x
  2. Step 2: Convert to fraction form
    254,472.60/381,708.90 = 213,000.60/x
  3. Step 3: Cross multiply
    254,472.60x = 381,708.90 × 213,000.60
  4. Step 4: Simplify right side
    254,472.60x = 81,304,224,725.34
  5. Step 5: Solve for x
    x = 81,304,224,725.34/254,472.60
  6. Step 6: Final answer
    x = 319,500.90

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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.