Home / 285,650.28-428,337.72-108,043.20

Finding the Fourth Proportional to 285,650.28, 428,337.72 and 108,043.20

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Solution

The fourth proportional to 285,650.28, 428,337.72 and 108,043.20 is: 162,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,650.28 : 428,337.72 = 108,043.20 : x
  2. Step 2: Convert to fraction form
    285,650.28/428,337.72 = 108,043.20/x
  3. Step 3: Cross multiply
    285,650.28x = 428,337.72 × 108,043.20
  4. Step 4: Simplify right side
    285,650.28x = 46,278,977,949.50
  5. Step 5: Solve for x
    x = 46,278,977,949.50/285,650.28
  6. Step 6: Final answer
    x = 162,012.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.