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Finding the Fourth Proportional to 285,314.33, 393,733.53 and 157,989.92

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Solution

The fourth proportional to 285,314.33, 393,733.53 and 157,989.92 is: 218,025.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,314.33 : 393,733.53 = 157,989.92 : x
  2. Step 2: Convert to fraction form
    285,314.33/393,733.53 = 157,989.92/x
  3. Step 3: Cross multiply
    285,314.33x = 393,733.53 × 157,989.92
  4. Step 4: Simplify right side
    285,314.33x = 62,205,928,906.02
  5. Step 5: Solve for x
    x = 62,205,928,906.02/285,314.33
  6. Step 6: Final answer
    x = 218,025.95

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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.