Home / 261,630.13-391,760.03-171,388.95

Finding the Fourth Proportional to 261,630.13, 391,760.03 and 171,388.95

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Solution

The fourth proportional to 261,630.13, 391,760.03 and 171,388.95 is: 256,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,630.13 : 391,760.03 = 171,388.95 : x
  2. Step 2: Convert to fraction form
    261,630.13/391,760.03 = 171,388.95/x
  3. Step 3: Cross multiply
    261,630.13x = 391,760.03 × 171,388.95
  4. Step 4: Simplify right side
    261,630.13x = 67,143,340,193.67
  5. Step 5: Solve for x
    x = 67,143,340,193.67/261,630.13
  6. Step 6: Final answer
    x = 256,634.59

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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.