Home / 231,404.95-319,368.41-129,436.08

Finding the Fourth Proportional to 231,404.95, 319,368.41 and 129,436.08

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Solution

The fourth proportional to 231,404.95, 319,368.41 and 129,436.08 is: 178,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,404.95 : 319,368.41 = 129,436.08 : x
  2. Step 2: Convert to fraction form
    231,404.95/319,368.41 = 129,436.08/x
  3. Step 3: Cross multiply
    231,404.95x = 319,368.41 × 129,436.08
  4. Step 4: Simplify right side
    231,404.95x = 41,337,793,524.79
  5. Step 5: Solve for x
    x = 41,337,793,524.79/231,404.95
  6. Step 6: Final answer
    x = 178,638.33

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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.