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Finding the Fourth Proportional to 275,915.10, 380,728.68 and 159,648.56

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Solution

The fourth proportional to 275,915.10, 380,728.68 and 159,648.56 is: 220,295.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,915.10 : 380,728.68 = 159,648.56 : x
  2. Step 2: Convert to fraction form
    275,915.10/380,728.68 = 159,648.56/x
  3. Step 3: Cross multiply
    275,915.10x = 380,728.68 × 159,648.56
  4. Step 4: Simplify right side
    275,915.10x = 60,782,784,438.11
  5. Step 5: Solve for x
    x = 60,782,784,438.11/275,915.10
  6. Step 6: Final answer
    x = 220,295.24

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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.