Home / 261,631.60-392,447.40-259,663.30

Finding the Fourth Proportional to 261,631.60, 392,447.40 and 259,663.30

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Solution

The fourth proportional to 261,631.60, 392,447.40 and 259,663.30 is: 389,494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,631.60 : 392,447.40 = 259,663.30 : x
  2. Step 2: Convert to fraction form
    261,631.60/392,447.40 = 259,663.30/x
  3. Step 3: Cross multiply
    261,631.60x = 392,447.40 × 259,663.30
  4. Step 4: Simplify right side
    261,631.60x = 101,904,186,960.42
  5. Step 5: Solve for x
    x = 101,904,186,960.42/261,631.60
  6. Step 6: Final answer
    x = 389,494.95

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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.