Home / 231,580.80-319,587.18-129,605.46

Finding the Fourth Proportional to 231,580.80, 319,587.18 and 129,605.46

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Solution

The fourth proportional to 231,580.80, 319,587.18 and 129,605.46 is: 178,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,580.80 : 319,587.18 = 129,605.46 : x
  2. Step 2: Convert to fraction form
    231,580.80/319,587.18 = 129,605.46/x
  3. Step 3: Cross multiply
    231,580.80x = 319,587.18 × 129,605.46
  4. Step 4: Simplify right side
    231,580.80x = 41,420,243,474.00
  5. Step 5: Solve for x
    x = 41,420,243,474.00/231,580.80
  6. Step 6: Final answer
    x = 178,858.71

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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.