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Finding the Fourth Proportional to 252,207.16, 378,369.62 and 85,995.32

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Solution

The fourth proportional to 252,207.16, 378,369.62 and 85,995.32 is: 129,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,207.16 : 378,369.62 = 85,995.32 : x
  2. Step 2: Convert to fraction form
    252,207.16/378,369.62 = 85,995.32/x
  3. Step 3: Cross multiply
    252,207.16x = 378,369.62 × 85,995.32
  4. Step 4: Simplify right side
    252,207.16x = 32,538,016,550.18
  5. Step 5: Solve for x
    x = 32,538,016,550.18/252,207.16
  6. Step 6: Final answer
    x = 129,013.06

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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.