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Finding the Fourth Proportional to 304,387.11, 420,120.42 and 177,079.41

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Solution

The fourth proportional to 304,387.11, 420,120.42 and 177,079.41 is: 244,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,387.11 : 420,120.42 = 177,079.41 : x
  2. Step 2: Convert to fraction form
    304,387.11/420,120.42 = 177,079.41/x
  3. Step 3: Cross multiply
    304,387.11x = 420,120.42 × 177,079.41
  4. Step 4: Simplify right side
    304,387.11x = 74,394,676,102.55
  5. Step 5: Solve for x
    x = 74,394,676,102.55/304,387.11
  6. Step 6: Final answer
    x = 244,408.10

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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.