Home / 285,513.17-393,992.15-156,427.29

Finding the Fourth Proportional to 285,513.17, 393,992.15 and 156,427.29

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Solution

The fourth proportional to 285,513.17, 393,992.15 and 156,427.29 is: 215,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,513.17 : 393,992.15 = 156,427.29 : x
  2. Step 2: Convert to fraction form
    285,513.17/393,992.15 = 156,427.29/x
  3. Step 3: Cross multiply
    285,513.17x = 393,992.15 × 156,427.29
  4. Step 4: Simplify right side
    285,513.17x = 61,631,123,523.64
  5. Step 5: Solve for x
    x = 61,631,123,523.64/285,513.17
  6. Step 6: Final answer
    x = 215,860.88

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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.