Home / 231,478.20-319,438.38-130,876.60

Finding the Fourth Proportional to 231,478.20, 319,438.38 and 130,876.60

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Solution

The fourth proportional to 231,478.20, 319,438.38 and 130,876.60 is: 180,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,478.20 : 319,438.38 = 130,876.60 : x
  2. Step 2: Convert to fraction form
    231,478.20/319,438.38 = 130,876.60/x
  3. Step 3: Cross multiply
    231,478.20x = 319,438.38 × 130,876.60
  4. Step 4: Simplify right side
    231,478.20x = 41,807,009,083.91
  5. Step 5: Solve for x
    x = 41,807,009,083.91/231,478.20
  6. Step 6: Final answer
    x = 180,608.84

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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.