Home / 257,982.31-386,515.18-220,158.55

Finding the Fourth Proportional to 257,982.31, 386,515.18 and 220,158.55

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Solution

The fourth proportional to 257,982.31, 386,515.18 and 220,158.55 is: 329,846.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,982.31 : 386,515.18 = 220,158.55 : x
  2. Step 2: Convert to fraction form
    257,982.31/386,515.18 = 220,158.55/x
  3. Step 3: Cross multiply
    257,982.31x = 386,515.18 × 220,158.55
  4. Step 4: Simplify right side
    257,982.31x = 85,094,621,581.79
  5. Step 5: Solve for x
    x = 85,094,621,581.79/257,982.31
  6. Step 6: Final answer
    x = 329,846.73

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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.