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Finding the Fourth Proportional to 215,867.64, 323,605.43 and 75,549.72

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Solution

The fourth proportional to 215,867.64, 323,605.43 and 75,549.72 is: 113,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,867.64 : 323,605.43 = 75,549.72 : x
  2. Step 2: Convert to fraction form
    215,867.64/323,605.43 = 75,549.72/x
  3. Step 3: Cross multiply
    215,867.64x = 323,605.43 × 75,549.72
  4. Step 4: Simplify right side
    215,867.64x = 24,448,299,626.98
  5. Step 5: Solve for x
    x = 24,448,299,626.98/215,867.64
  6. Step 6: Final answer
    x = 113,255.97

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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.