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Finding the Fourth Proportional to 438,959.24, 658,477.74 and 123,418.88

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Solution

The fourth proportional to 438,959.24, 658,477.74 and 123,418.88 is: 185,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,959.24 : 658,477.74 = 123,418.88 : x
  2. Step 2: Convert to fraction form
    438,959.24/658,477.74 = 123,418.88/x
  3. Step 3: Cross multiply
    438,959.24x = 658,477.74 × 123,418.88
  4. Step 4: Simplify right side
    438,959.24x = 81,268,585,175.73
  5. Step 5: Solve for x
    x = 81,268,585,175.73/438,959.24
  6. Step 6: Final answer
    x = 185,139.25

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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.