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Finding the Fourth Proportional to 217,232.40, 325,589.40 and 90,872.40

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Solution

The fourth proportional to 217,232.40, 325,589.40 and 90,872.40 is: 136,200.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,232.40 : 325,589.40 = 90,872.40 : x
  2. Step 2: Convert to fraction form
    217,232.40/325,589.40 = 90,872.40/x
  3. Step 3: Cross multiply
    217,232.40x = 325,589.40 × 90,872.40
  4. Step 4: Simplify right side
    217,232.40x = 29,587,090,192.56
  5. Step 5: Solve for x
    x = 29,587,090,192.56/217,232.40
  6. Step 6: Final answer
    x = 136,200.17

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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.