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Finding the Fourth Proportional to 220,879.16, 304,805.13 and 134,981.88

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Solution

The fourth proportional to 220,879.16, 304,805.13 and 134,981.88 is: 186,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,879.16 : 304,805.13 = 134,981.88 : x
  2. Step 2: Convert to fraction form
    220,879.16/304,805.13 = 134,981.88/x
  3. Step 3: Cross multiply
    220,879.16x = 304,805.13 × 134,981.88
  4. Step 4: Simplify right side
    220,879.16x = 41,143,169,481.04
  5. Step 5: Solve for x
    x = 41,143,169,481.04/220,879.16
  6. Step 6: Final answer
    x = 186,270.04

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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.