Home / 257,722.20-386,490.60-89,196.75

Finding the Fourth Proportional to 257,722.20, 386,490.60 and 89,196.75

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Solution

The fourth proportional to 257,722.20, 386,490.60 and 89,196.75 is: 133,763.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,722.20 : 386,490.60 = 89,196.75 : x
  2. Step 2: Convert to fraction form
    257,722.20/386,490.60 = 89,196.75/x
  3. Step 3: Cross multiply
    257,722.20x = 386,490.60 × 89,196.75
  4. Step 4: Simplify right side
    257,722.20x = 34,473,705,425.55
  5. Step 5: Solve for x
    x = 34,473,705,425.55/257,722.20
  6. Step 6: Final answer
    x = 133,763.04

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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.