Home / 268,729.38-403,085.52-66,326.61

Finding the Fourth Proportional to 268,729.38, 403,085.52 and 66,326.61

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Solution

The fourth proportional to 268,729.38, 403,085.52 and 66,326.61 is: 99,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,729.38 : 403,085.52 = 66,326.61 : x
  2. Step 2: Convert to fraction form
    268,729.38/403,085.52 = 66,326.61/x
  3. Step 3: Cross multiply
    268,729.38x = 403,085.52 × 66,326.61
  4. Step 4: Simplify right side
    268,729.38x = 26,735,296,081.69
  5. Step 5: Solve for x
    x = 26,735,296,081.69/268,729.38
  6. Step 6: Final answer
    x = 99,487.80

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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.