Home / 257,819.85-386,637.12-89,294.76

Finding the Fourth Proportional to 257,819.85, 386,637.12 and 89,294.76

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Solution

The fourth proportional to 257,819.85, 386,637.12 and 89,294.76 is: 133,910.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,819.85 : 386,637.12 = 89,294.76 : x
  2. Step 2: Convert to fraction form
    257,819.85/386,637.12 = 89,294.76/x
  3. Step 3: Cross multiply
    257,819.85x = 386,637.12 × 89,294.76
  4. Step 4: Simplify right side
    257,819.85x = 34,524,668,837.49
  5. Step 5: Solve for x
    x = 34,524,668,837.49/257,819.85
  6. Step 6: Final answer
    x = 133,910.05

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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.