Home / 219,815.80-329,723.70-126,503.80

Finding the Fourth Proportional to 219,815.80, 329,723.70 and 126,503.80

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Solution

The fourth proportional to 219,815.80, 329,723.70 and 126,503.80 is: 189,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,815.80 : 329,723.70 = 126,503.80 : x
  2. Step 2: Convert to fraction form
    219,815.80/329,723.70 = 126,503.80/x
  3. Step 3: Cross multiply
    219,815.80x = 329,723.70 × 126,503.80
  4. Step 4: Simplify right side
    219,815.80x = 41,711,301,000.06
  5. Step 5: Solve for x
    x = 41,711,301,000.06/219,815.80
  6. Step 6: Final answer
    x = 189,755.70

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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.