Home / 261,273.22-391,245.08-172,256.66

Finding the Fourth Proportional to 261,273.22, 391,245.08 and 172,256.66

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Solution

The fourth proportional to 261,273.22, 391,245.08 and 172,256.66 is: 257,946.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,273.22 : 391,245.08 = 172,256.66 : x
  2. Step 2: Convert to fraction form
    261,273.22/391,245.08 = 172,256.66/x
  3. Step 3: Cross multiply
    261,273.22x = 391,245.08 × 172,256.66
  4. Step 4: Simplify right side
    261,273.22x = 67,394,570,722.23
  5. Step 5: Solve for x
    x = 67,394,570,722.23/261,273.22
  6. Step 6: Final answer
    x = 257,946.72

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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.