Home / 220,580.26-304,318.29-129,880.78

Finding the Fourth Proportional to 220,580.26, 304,318.29 and 129,880.78

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Solution

The fourth proportional to 220,580.26, 304,318.29 and 129,880.78 is: 179,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,580.26 : 304,318.29 = 129,880.78 : x
  2. Step 2: Convert to fraction form
    220,580.26/304,318.29 = 129,880.78/x
  3. Step 3: Cross multiply
    220,580.26x = 304,318.29 × 129,880.78
  4. Step 4: Simplify right side
    220,580.26x = 39,525,096,873.47
  5. Step 5: Solve for x
    x = 39,525,096,873.47/220,580.26
  6. Step 6: Final answer
    x = 179,186.92

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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.