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Finding the Fourth Proportional to 284,960.76, 393,250.05 and 157,635.78

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Solution

The fourth proportional to 284,960.76, 393,250.05 and 157,635.78 is: 217,539.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,960.76 : 393,250.05 = 157,635.78 : x
  2. Step 2: Convert to fraction form
    284,960.76/393,250.05 = 157,635.78/x
  3. Step 3: Cross multiply
    284,960.76x = 393,250.05 × 157,635.78
  4. Step 4: Simplify right side
    284,960.76x = 61,990,278,366.79
  5. Step 5: Solve for x
    x = 61,990,278,366.79/284,960.76
  6. Step 6: Final answer
    x = 217,539.70

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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.