Home / 261,984.20-392,976.30-72,444.20

Finding the Fourth Proportional to 261,984.20, 392,976.30 and 72,444.20

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Solution

The fourth proportional to 261,984.20, 392,976.30 and 72,444.20 is: 108,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,984.20 : 392,976.30 = 72,444.20 : x
  2. Step 2: Convert to fraction form
    261,984.20/392,976.30 = 72,444.20/x
  3. Step 3: Cross multiply
    261,984.20x = 392,976.30 × 72,444.20
  4. Step 4: Simplify right side
    261,984.20x = 28,468,853,672.46
  5. Step 5: Solve for x
    x = 28,468,853,672.46/261,984.20
  6. Step 6: Final answer
    x = 108,666.30

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Similar ratio
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1.5x scale

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.