Home / 261,666.30-391,981.05-243,003.90

Finding the Fourth Proportional to 261,666.30, 391,981.05 and 243,003.90

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Solution

The fourth proportional to 261,666.30, 391,981.05 and 243,003.90 is: 364,024.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,666.30 : 391,981.05 = 243,003.90 : x
  2. Step 2: Convert to fraction form
    261,666.30/391,981.05 = 243,003.90/x
  3. Step 3: Cross multiply
    261,666.30x = 391,981.05 × 243,003.90
  4. Step 4: Simplify right side
    261,666.30x = 95,252,923,876.10
  5. Step 5: Solve for x
    x = 95,252,923,876.10/261,666.30
  6. Step 6: Final answer
    x = 364,024.42

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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.