Home / 285,902.12-428,689.13-108,295.85

Finding the Fourth Proportional to 285,902.12, 428,689.13 and 108,295.85

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Solution

The fourth proportional to 285,902.12, 428,689.13 and 108,295.85 is: 162,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,902.12 : 428,689.13 = 108,295.85 : x
  2. Step 2: Convert to fraction form
    285,902.12/428,689.13 = 108,295.85/x
  3. Step 3: Cross multiply
    285,902.12x = 428,689.13 × 108,295.85
  4. Step 4: Simplify right side
    285,902.12x = 46,425,254,249.35
  5. Step 5: Solve for x
    x = 46,425,254,249.35/285,902.12
  6. Step 6: Final answer
    x = 162,381.64

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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.