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Finding the Fourth Proportional to 261,557.76, 392,340.28 and 74,569.26

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Solution

The fourth proportional to 261,557.76, 392,340.28 and 74,569.26 is: 111,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,557.76 : 392,340.28 = 74,569.26 : x
  2. Step 2: Convert to fraction form
    261,557.76/392,340.28 = 74,569.26/x
  3. Step 3: Cross multiply
    261,557.76x = 392,340.28 × 74,569.26
  4. Step 4: Simplify right side
    261,557.76x = 29,256,524,347.79
  5. Step 5: Solve for x
    x = 29,256,524,347.79/261,557.76
  6. Step 6: Final answer
    x = 111,854.93

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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.