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Finding the Fourth Proportional to 458,082.10, 687,123.15 and 234,133.30

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Solution

The fourth proportional to 458,082.10, 687,123.15 and 234,133.30 is: 351,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,082.10 : 687,123.15 = 234,133.30 : x
  2. Step 2: Convert to fraction form
    458,082.10/687,123.15 = 234,133.30/x
  3. Step 3: Cross multiply
    458,082.10x = 687,123.15 × 234,133.30
  4. Step 4: Simplify right side
    458,082.10x = 160,878,410,615.90
  5. Step 5: Solve for x
    x = 160,878,410,615.90/458,082.10
  6. Step 6: Final answer
    x = 351,199.95

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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.