Home / 220,581.26-304,319.67-129,881.78

Finding the Fourth Proportional to 220,581.26, 304,319.67 and 129,881.78

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Solution

The fourth proportional to 220,581.26, 304,319.67 and 129,881.78 is: 179,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,581.26 : 304,319.67 = 129,881.78 : x
  2. Step 2: Convert to fraction form
    220,581.26/304,319.67 = 129,881.78/x
  3. Step 3: Cross multiply
    220,581.26x = 304,319.67 × 129,881.78
  4. Step 4: Simplify right side
    220,581.26x = 39,525,580,428.61
  5. Step 5: Solve for x
    x = 39,525,580,428.61/220,581.26
  6. Step 6: Final answer
    x = 179,188.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.