Home / 285,846.20-428,769.30-98,876.60

Finding the Fourth Proportional to 285,846.20, 428,769.30 and 98,876.60

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Solution

The fourth proportional to 285,846.20, 428,769.30 and 98,876.60 is: 148,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,846.20 : 428,769.30 = 98,876.60 : x
  2. Step 2: Convert to fraction form
    285,846.20/428,769.30 = 98,876.60/x
  3. Step 3: Cross multiply
    285,846.20x = 428,769.30 × 98,876.60
  4. Step 4: Simplify right side
    285,846.20x = 42,395,250,568.38
  5. Step 5: Solve for x
    x = 42,395,250,568.38/285,846.20
  6. Step 6: Final answer
    x = 148,314.90

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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.