Home / 261,298.56-391,948.02-172,531.20

Finding the Fourth Proportional to 261,298.56, 391,948.02 and 172,531.20

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Solution

The fourth proportional to 261,298.56, 391,948.02 and 172,531.20 is: 258,796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,298.56 : 391,948.02 = 172,531.20 : x
  2. Step 2: Convert to fraction form
    261,298.56/391,948.02 = 172,531.20/x
  3. Step 3: Cross multiply
    261,298.56x = 391,948.02 × 172,531.20
  4. Step 4: Simplify right side
    261,298.56x = 67,623,262,228.22
  5. Step 5: Solve for x
    x = 67,623,262,228.22/261,298.56
  6. Step 6: Final answer
    x = 258,796.92

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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.