Home / 285,508.09-428,229.01-75,162.43

Finding the Fourth Proportional to 285,508.09, 428,229.01 and 75,162.43

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Solution

The fourth proportional to 285,508.09, 428,229.01 and 75,162.43 is: 112,734.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,508.09 : 428,229.01 = 75,162.43 : x
  2. Step 2: Convert to fraction form
    285,508.09/428,229.01 = 75,162.43/x
  3. Step 3: Cross multiply
    285,508.09x = 428,229.01 × 75,162.43
  4. Step 4: Simplify right side
    285,508.09x = 32,186,732,988.09
  5. Step 5: Solve for x
    x = 32,186,732,988.09/285,508.09
  6. Step 6: Final answer
    x = 112,734.92

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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.