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Finding the Fourth Proportional to 391,400.11, 586,915.08 and 151,626.31

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Solution

The fourth proportional to 391,400.11, 586,915.08 and 151,626.31 is: 227,367.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,400.11 : 586,915.08 = 151,626.31 : x
  2. Step 2: Convert to fraction form
    391,400.11/586,915.08 = 151,626.31/x
  3. Step 3: Cross multiply
    391,400.11x = 586,915.08 × 151,626.31
  4. Step 4: Simplify right side
    391,400.11x = 88,991,767,863.75
  5. Step 5: Solve for x
    x = 88,991,767,863.75/391,400.11
  6. Step 6: Final answer
    x = 227,367.76

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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.