Home / 257,811.35-386,624.38-89,286.30

Finding the Fourth Proportional to 257,811.35, 386,624.38 and 89,286.30

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Solution

The fourth proportional to 257,811.35, 386,624.38 and 89,286.30 is: 133,897.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,811.35 : 386,624.38 = 89,286.30 : x
  2. Step 2: Convert to fraction form
    257,811.35/386,624.38 = 89,286.30/x
  3. Step 3: Cross multiply
    257,811.35x = 386,624.38 × 89,286.30
  4. Step 4: Simplify right side
    257,811.35x = 34,520,258,446.87
  5. Step 5: Solve for x
    x = 34,520,258,446.87/257,811.35
  6. Step 6: Final answer
    x = 133,897.36

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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.