Home / 261,277.82-391,917.33-71,740.79

Finding the Fourth Proportional to 261,277.82, 391,917.33 and 71,740.79

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Solution

The fourth proportional to 261,277.82, 391,917.33 and 71,740.79 is: 107,611.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,277.82 : 391,917.33 = 71,740.79 : x
  2. Step 2: Convert to fraction form
    261,277.82/391,917.33 = 71,740.79/x
  3. Step 3: Cross multiply
    261,277.82x = 391,917.33 × 71,740.79
  4. Step 4: Simplify right side
    261,277.82x = 28,116,456,909.30
  5. Step 5: Solve for x
    x = 28,116,456,909.30/261,277.82
  6. Step 6: Final answer
    x = 107,611.34

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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.