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Finding the Fourth Proportional to 243,081.72, 363,998.88 and 168,098.40

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Solution

The fourth proportional to 243,081.72, 363,998.88 and 168,098.40 is: 251,716.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,081.72 : 363,998.88 = 168,098.40 : x
  2. Step 2: Convert to fraction form
    243,081.72/363,998.88 = 168,098.40/x
  3. Step 3: Cross multiply
    243,081.72x = 363,998.88 × 168,098.40
  4. Step 4: Simplify right side
    243,081.72x = 61,187,629,329.79
  5. Step 5: Solve for x
    x = 61,187,629,329.79/243,081.72
  6. Step 6: Final answer
    x = 251,716.29

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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.