Home / 286,082.20-428,540.10-145,919.80

Finding the Fourth Proportional to 286,082.20, 428,540.10 and 145,919.80

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Solution

The fourth proportional to 286,082.20, 428,540.10 and 145,919.80 is: 218,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,082.20 : 428,540.10 = 145,919.80 : x
  2. Step 2: Convert to fraction form
    286,082.20/428,540.10 = 145,919.80/x
  3. Step 3: Cross multiply
    286,082.20x = 428,540.10 × 145,919.80
  4. Step 4: Simplify right side
    286,082.20x = 62,532,485,683.98
  5. Step 5: Solve for x
    x = 62,532,485,683.98/286,082.20
  6. Step 6: Final answer
    x = 218,582.23

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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.