Home / 219,495.20-329,091.49-86,390.74

Finding the Fourth Proportional to 219,495.20, 329,091.49 and 86,390.74

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Solution

The fourth proportional to 219,495.20, 329,091.49 and 86,390.74 is: 129,526.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,495.20 : 329,091.49 = 86,390.74 : x
  2. Step 2: Convert to fraction form
    219,495.20/329,091.49 = 86,390.74/x
  3. Step 3: Cross multiply
    219,495.20x = 329,091.49 × 86,390.74
  4. Step 4: Simplify right side
    219,495.20x = 28,430,457,348.80
  5. Step 5: Solve for x
    x = 28,430,457,348.80/219,495.20
  6. Step 6: Final answer
    x = 129,526.56

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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.