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Finding the Fourth Proportional to 220,287.89, 329,716.94 and 118,945.06

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Solution

The fourth proportional to 220,287.89, 329,716.94 and 118,945.06 is: 178,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,287.89 : 329,716.94 = 118,945.06 : x
  2. Step 2: Convert to fraction form
    220,287.89/329,716.94 = 118,945.06/x
  3. Step 3: Cross multiply
    220,287.89x = 329,716.94 × 118,945.06
  4. Step 4: Simplify right side
    220,287.89x = 39,218,199,792.30
  5. Step 5: Solve for x
    x = 39,218,199,792.30/220,287.89
  6. Step 6: Final answer
    x = 178,031.57

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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.