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Finding the Fourth Proportional to 220,551.66, 304,430.67 and 125,121.78

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Solution

The fourth proportional to 220,551.66, 304,430.67 and 125,121.78 is: 172,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,551.66 : 304,430.67 = 125,121.78 : x
  2. Step 2: Convert to fraction form
    220,551.66/304,430.67 = 125,121.78/x
  3. Step 3: Cross multiply
    220,551.66x = 304,430.67 × 125,121.78
  4. Step 4: Simplify right side
    220,551.66x = 38,090,907,316.99
  5. Step 5: Solve for x
    x = 38,090,907,316.99/220,551.66
  6. Step 6: Final answer
    x = 172,707.42

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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.