Home / 231,474.90-319,464.82-129,506.08

Finding the Fourth Proportional to 231,474.90, 319,464.82 and 129,506.08

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Solution

The fourth proportional to 231,474.90, 319,464.82 and 129,506.08 is: 178,734.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,474.90 : 319,464.82 = 129,506.08 : x
  2. Step 2: Convert to fraction form
    231,474.90/319,464.82 = 129,506.08/x
  3. Step 3: Cross multiply
    231,474.90x = 319,464.82 × 129,506.08
  4. Step 4: Simplify right side
    231,474.90x = 41,372,636,536.11
  5. Step 5: Solve for x
    x = 41,372,636,536.11/231,474.90
  6. Step 6: Final answer
    x = 178,734.87

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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.