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Finding the Fourth Proportional to 261,791.26, 392,323.56 and 119,288.28

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Solution

The fourth proportional to 261,791.26, 392,323.56 and 119,288.28 is: 178,766.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,791.26 : 392,323.56 = 119,288.28 : x
  2. Step 2: Convert to fraction form
    261,791.26/392,323.56 = 119,288.28/x
  3. Step 3: Cross multiply
    261,791.26x = 392,323.56 × 119,288.28
  4. Step 4: Simplify right side
    261,791.26x = 46,799,602,675.88
  5. Step 5: Solve for x
    x = 46,799,602,675.88/261,791.26
  6. Step 6: Final answer
    x = 178,766.86

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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.