Home / 288,787.20-398,366.35-167,915.13

Finding the Fourth Proportional to 288,787.20, 398,366.35 and 167,915.13

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Solution

The fourth proportional to 288,787.20, 398,366.35 and 167,915.13 is: 231,629.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,787.20 : 398,366.35 = 167,915.13 : x
  2. Step 2: Convert to fraction form
    288,787.20/398,366.35 = 167,915.13/x
  3. Step 3: Cross multiply
    288,787.20x = 398,366.35 × 167,915.13
  4. Step 4: Simplify right side
    288,787.20x = 66,891,737,447.88
  5. Step 5: Solve for x
    x = 66,891,737,447.88/288,787.20
  6. Step 6: Final answer
    x = 231,629.86

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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.