Home / 261,180-391,769.96-172,412.70

Finding the Fourth Proportional to 261,180, 391,769.96 and 172,412.70

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Solution

The fourth proportional to 261,180, 391,769.96 and 172,412.70 is: 258,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,180 : 391,769.96 = 172,412.70 : x
  2. Step 2: Convert to fraction form
    261,180/391,769.96 = 172,412.70/x
  3. Step 3: Cross multiply
    261,180x = 391,769.96 × 172,412.70
  4. Step 4: Simplify right side
    261,180x = 67,546,115,720.43
  5. Step 5: Solve for x
    x = 67,546,115,720.43/261,180
  6. Step 6: Final answer
    x = 258,619.02

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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.