Home / 285,500.09-428,217.01-75,154.43

Finding the Fourth Proportional to 285,500.09, 428,217.01 and 75,154.43

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Solution

The fourth proportional to 285,500.09, 428,217.01 and 75,154.43 is: 112,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,500.09 : 428,217.01 = 75,154.43 : x
  2. Step 2: Convert to fraction form
    285,500.09/428,217.01 = 75,154.43/x
  3. Step 3: Cross multiply
    285,500.09x = 428,217.01 × 75,154.43
  4. Step 4: Simplify right side
    285,500.09x = 32,182,405,302.85
  5. Step 5: Solve for x
    x = 32,182,405,302.85/285,500.09
  6. Step 6: Final answer
    x = 112,722.93

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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.