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Finding the Fourth Proportional to 239,979, 359,902.26 and 90,207.48

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Solution

The fourth proportional to 239,979, 359,902.26 and 90,207.48 is: 135,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,979 : 359,902.26 = 90,207.48 : x
  2. Step 2: Convert to fraction form
    239,979/359,902.26 = 90,207.48/x
  3. Step 3: Cross multiply
    239,979x = 359,902.26 × 90,207.48
  4. Step 4: Simplify right side
    239,979x = 32,465,875,920.90
  5. Step 5: Solve for x
    x = 32,465,875,920.90/239,979
  6. Step 6: Final answer
    x = 135,286.32

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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.