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Finding the Fourth Proportional to 285,149.06, 393,500.94 and 157,821.92

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Solution

The fourth proportional to 285,149.06, 393,500.94 and 157,821.92 is: 217,791.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,149.06 : 393,500.94 = 157,821.92 : x
  2. Step 2: Convert to fraction form
    285,149.06/393,500.94 = 157,821.92/x
  3. Step 3: Cross multiply
    285,149.06x = 393,500.94 × 157,821.92
  4. Step 4: Simplify right side
    285,149.06x = 62,103,073,872.60
  5. Step 5: Solve for x
    x = 62,103,073,872.60/285,149.06
  6. Step 6: Final answer
    x = 217,791.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.