Home / 261,318.60-391,103.10-229,825.80

Finding the Fourth Proportional to 261,318.60, 391,103.10 and 229,825.80

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Solution

The fourth proportional to 261,318.60, 391,103.10 and 229,825.80 is: 343,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,318.60 : 391,103.10 = 229,825.80 : x
  2. Step 2: Convert to fraction form
    261,318.60/391,103.10 = 229,825.80/x
  3. Step 3: Cross multiply
    261,318.60x = 391,103.10 × 229,825.80
  4. Step 4: Simplify right side
    261,318.60x = 89,885,582,839.98
  5. Step 5: Solve for x
    x = 89,885,582,839.98/261,318.60
  6. Step 6: Final answer
    x = 343,969.33

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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.