Home / 231,436.48-319,411.92-129,467.60

Finding the Fourth Proportional to 231,436.48, 319,411.92 and 129,467.60

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Solution

The fourth proportional to 231,436.48, 319,411.92 and 129,467.60 is: 178,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,436.48 : 319,411.92 = 129,467.60 : x
  2. Step 2: Convert to fraction form
    231,436.48/319,411.92 = 129,467.60/x
  3. Step 3: Cross multiply
    231,436.48x = 319,411.92 × 129,467.60
  4. Step 4: Simplify right side
    231,436.48x = 41,353,494,693.79
  5. Step 5: Solve for x
    x = 41,353,494,693.79/231,436.48
  6. Step 6: Final answer
    x = 178,681.83

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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.