Home / 285,552.70-428,329.05-75,211.90

Finding the Fourth Proportional to 285,552.70, 428,329.05 and 75,211.90

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Solution

The fourth proportional to 285,552.70, 428,329.05 and 75,211.90 is: 112,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,552.70 : 428,329.05 = 75,211.90 : x
  2. Step 2: Convert to fraction form
    285,552.70/428,329.05 = 75,211.90/x
  3. Step 3: Cross multiply
    285,552.70x = 428,329.05 × 75,211.90
  4. Step 4: Simplify right side
    285,552.70x = 32,215,441,675.70
  5. Step 5: Solve for x
    x = 32,215,441,675.70/285,552.70
  6. Step 6: Final answer
    x = 112,817.85

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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.