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Finding the Fourth Proportional to 257,149.71, 385,693.86 and 67,624.85

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Solution

The fourth proportional to 257,149.71, 385,693.86 and 67,624.85 is: 101,429.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,149.71 : 385,693.86 = 67,624.85 : x
  2. Step 2: Convert to fraction form
    257,149.71/385,693.86 = 67,624.85/x
  3. Step 3: Cross multiply
    257,149.71x = 385,693.86 × 67,624.85
  4. Step 4: Simplify right side
    257,149.71x = 26,082,487,161.83
  5. Step 5: Solve for x
    x = 26,082,487,161.83/257,149.71
  6. Step 6: Final answer
    x = 101,429.19

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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.