Home / 231,433.49-319,407.78-129,464.60

Finding the Fourth Proportional to 231,433.49, 319,407.78 and 129,464.60

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Solution

The fourth proportional to 231,433.49, 319,407.78 and 129,464.60 is: 178,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,433.49 : 319,407.78 = 129,464.60 : x
  2. Step 2: Convert to fraction form
    231,433.49/319,407.78 = 129,464.60/x
  3. Step 3: Cross multiply
    231,433.49x = 319,407.78 × 129,464.60
  4. Step 4: Simplify right side
    231,433.49x = 41,352,000,474.59
  5. Step 5: Solve for x
    x = 41,352,000,474.59/231,433.49
  6. Step 6: Final answer
    x = 178,677.69

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1.5x scale

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.