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Finding the Fourth Proportional to 304,987.44, 420,876.38 and 169,020.32

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Solution

The fourth proportional to 304,987.44, 420,876.38 and 169,020.32 is: 233,244.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,987.44 : 420,876.38 = 169,020.32 : x
  2. Step 2: Convert to fraction form
    304,987.44/420,876.38 = 169,020.32/x
  3. Step 3: Cross multiply
    304,987.44x = 420,876.38 × 169,020.32
  4. Step 4: Simplify right side
    304,987.44x = 71,136,660,428.04
  5. Step 5: Solve for x
    x = 71,136,660,428.04/304,987.44
  6. Step 6: Final answer
    x = 233,244.56

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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.