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Finding the Fourth Proportional to 378,593.43, 522,515.51 and 242,780.73

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Solution

The fourth proportional to 378,593.43, 522,515.51 and 242,780.73 is: 335,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,593.43 : 522,515.51 = 242,780.73 : x
  2. Step 2: Convert to fraction form
    378,593.43/522,515.51 = 242,780.73/x
  3. Step 3: Cross multiply
    378,593.43x = 522,515.51 × 242,780.73
  4. Step 4: Simplify right side
    378,593.43x = 126,856,696,954.12
  5. Step 5: Solve for x
    x = 126,856,696,954.12/378,593.43
  6. Step 6: Final answer
    x = 335,073.69

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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.