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Finding the Fourth Proportional to 281,612.61, 422,418.91 and 187,027.54

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Solution

The fourth proportional to 281,612.61, 422,418.91 and 187,027.54 is: 280,541.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,612.61 : 422,418.91 = 187,027.54 : x
  2. Step 2: Convert to fraction form
    281,612.61/422,418.91 = 187,027.54/x
  3. Step 3: Cross multiply
    281,612.61x = 422,418.91 × 187,027.54
  4. Step 4: Simplify right side
    281,612.61x = 79,003,969,586.78
  5. Step 5: Solve for x
    x = 79,003,969,586.78/281,612.61
  6. Step 6: Final answer
    x = 280,541.31

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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.