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Finding the Fourth Proportional to 309,304.80, 426,876.16 and 173,375.52

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Solution

The fourth proportional to 309,304.80, 426,876.16 and 173,375.52 is: 239,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,304.80 : 426,876.16 = 173,375.52 : x
  2. Step 2: Convert to fraction form
    309,304.80/426,876.16 = 173,375.52/x
  3. Step 3: Cross multiply
    309,304.80x = 426,876.16 × 173,375.52
  4. Step 4: Simplify right side
    309,304.80x = 74,009,876,215.60
  5. Step 5: Solve for x
    x = 74,009,876,215.60/309,304.80
  6. Step 6: Final answer
    x = 239,278.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.