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Finding the Fourth Proportional to 257,355.72, 386,085.11 and 88,882.20

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Solution

The fourth proportional to 257,355.72, 386,085.11 and 88,882.20 is: 133,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,355.72 : 386,085.11 = 88,882.20 : x
  2. Step 2: Convert to fraction form
    257,355.72/386,085.11 = 88,882.20/x
  3. Step 3: Cross multiply
    257,355.72x = 386,085.11 × 88,882.20
  4. Step 4: Simplify right side
    257,355.72x = 34,316,093,519.63
  5. Step 5: Solve for x
    x = 34,316,093,519.63/257,355.72
  6. Step 6: Final answer
    x = 133,341.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.