Home / 261,296.56-391,945.02-172,529.20

Finding the Fourth Proportional to 261,296.56, 391,945.02 and 172,529.20

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Solution

The fourth proportional to 261,296.56, 391,945.02 and 172,529.20 is: 258,793.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,296.56 : 391,945.02 = 172,529.20 : x
  2. Step 2: Convert to fraction form
    261,296.56/391,945.02 = 172,529.20/x
  3. Step 3: Cross multiply
    261,296.56x = 391,945.02 × 172,529.20
  4. Step 4: Simplify right side
    261,296.56x = 67,621,960,744.58
  5. Step 5: Solve for x
    x = 67,621,960,744.58/261,296.56
  6. Step 6: Final answer
    x = 258,793.92

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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.