Home / 261,669.60-391,726.80-173,023.20

Finding the Fourth Proportional to 261,669.60, 391,726.80 and 173,023.20

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Solution

The fourth proportional to 261,669.60, 391,726.80 and 173,023.20 is: 259,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,669.60 : 391,726.80 = 173,023.20 : x
  2. Step 2: Convert to fraction form
    261,669.60/391,726.80 = 173,023.20/x
  3. Step 3: Cross multiply
    261,669.60x = 391,726.80 × 173,023.20
  4. Step 4: Simplify right side
    261,669.60x = 67,777,824,461.76
  5. Step 5: Solve for x
    x = 67,777,824,461.76/261,669.60
  6. Step 6: Final answer
    x = 259,020.63

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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.