Home / 213,581.28-320,503.68-108,475.68

Finding the Fourth Proportional to 213,581.28, 320,503.68 and 108,475.68

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Solution

The fourth proportional to 213,581.28, 320,503.68 and 108,475.68 is: 162,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,581.28 : 320,503.68 = 108,475.68 : x
  2. Step 2: Convert to fraction form
    213,581.28/320,503.68 = 108,475.68/x
  3. Step 3: Cross multiply
    213,581.28x = 320,503.68 × 108,475.68
  4. Step 4: Simplify right side
    213,581.28x = 34,766,854,630.50
  5. Step 5: Solve for x
    x = 34,766,854,630.50/213,581.28
  6. Step 6: Final answer
    x = 162,780.44

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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.