Home / 279,932.40-420,028.20-146,962.80

Finding the Fourth Proportional to 279,932.40, 420,028.20 and 146,962.80

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Solution

The fourth proportional to 279,932.40, 420,028.20 and 146,962.80 is: 220,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,932.40 : 420,028.20 = 146,962.80 : x
  2. Step 2: Convert to fraction form
    279,932.40/420,028.20 = 146,962.80/x
  3. Step 3: Cross multiply
    279,932.40x = 420,028.20 × 146,962.80
  4. Step 4: Simplify right side
    279,932.40x = 61,728,520,350.96
  5. Step 5: Solve for x
    x = 61,728,520,350.96/279,932.40
  6. Step 6: Final answer
    x = 220,512.24

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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.