Home / 281,811.20-422,678.40-84,819.20

Finding the Fourth Proportional to 281,811.20, 422,678.40 and 84,819.20

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Solution

The fourth proportional to 281,811.20, 422,678.40 and 84,819.20 is: 127,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,811.20 : 422,678.40 = 84,819.20 : x
  2. Step 2: Convert to fraction form
    281,811.20/422,678.40 = 84,819.20/x
  3. Step 3: Cross multiply
    281,811.20x = 422,678.40 × 84,819.20
  4. Step 4: Simplify right side
    281,811.20x = 35,851,243,745.28
  5. Step 5: Solve for x
    x = 35,851,243,745.28/281,811.20
  6. Step 6: Final answer
    x = 127,217.24

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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.