Home / 231,228.95-319,089.25-129,254.61

Finding the Fourth Proportional to 231,228.95, 319,089.25 and 129,254.61

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Solution

The fourth proportional to 231,228.95, 319,089.25 and 129,254.61 is: 178,367.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,228.95 : 319,089.25 = 129,254.61 : x
  2. Step 2: Convert to fraction form
    231,228.95/319,089.25 = 129,254.61/x
  3. Step 3: Cross multiply
    231,228.95x = 319,089.25 × 129,254.61
  4. Step 4: Simplify right side
    231,228.95x = 41,243,756,563.94
  5. Step 5: Solve for x
    x = 41,243,756,563.94/231,228.95
  6. Step 6: Final answer
    x = 178,367.62

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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.