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Finding the Fourth Proportional to 441,199.95, 660,129.87 and 261,381.92

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Solution

The fourth proportional to 441,199.95, 660,129.87 and 261,381.92 is: 391,083.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,199.95 : 660,129.87 = 261,381.92 : x
  2. Step 2: Convert to fraction form
    441,199.95/660,129.87 = 261,381.92/x
  3. Step 3: Cross multiply
    441,199.95x = 660,129.87 × 261,381.92
  4. Step 4: Simplify right side
    441,199.95x = 172,546,009,569.30
  5. Step 5: Solve for x
    x = 172,546,009,569.30/441,199.95
  6. Step 6: Final answer
    x = 391,083.47

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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.