Home / 261,988.20-392,982.30-74,999.70

Finding the Fourth Proportional to 261,988.20, 392,982.30 and 74,999.70

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Solution

The fourth proportional to 261,988.20, 392,982.30 and 74,999.70 is: 112,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,988.20 : 392,982.30 = 74,999.70 : x
  2. Step 2: Convert to fraction form
    261,988.20/392,982.30 = 74,999.70/x
  3. Step 3: Cross multiply
    261,988.20x = 392,982.30 × 74,999.70
  4. Step 4: Simplify right side
    261,988.20x = 29,473,554,605.31
  5. Step 5: Solve for x
    x = 29,473,554,605.31/261,988.20
  6. Step 6: Final answer
    x = 112,499.55

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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.