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Finding the Fourth Proportional to 257,573.52, 386,358.36 and 80,080.20

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Solution

The fourth proportional to 257,573.52, 386,358.36 and 80,080.20 is: 120,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,573.52 : 386,358.36 = 80,080.20 : x
  2. Step 2: Convert to fraction form
    257,573.52/386,358.36 = 80,080.20/x
  3. Step 3: Cross multiply
    257,573.52x = 386,358.36 × 80,080.20
  4. Step 4: Simplify right side
    257,573.52x = 30,939,654,740.47
  5. Step 5: Solve for x
    x = 30,939,654,740.47/257,573.52
  6. Step 6: Final answer
    x = 120,119.70

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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.