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Finding the Fourth Proportional to 203,565.43, 280,661.98 and 145,491.47

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Solution

The fourth proportional to 203,565.43, 280,661.98 and 145,491.47 is: 200,593.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,565.43 : 280,661.98 = 145,491.47 : x
  2. Step 2: Convert to fraction form
    203,565.43/280,661.98 = 145,491.47/x
  3. Step 3: Cross multiply
    203,565.43x = 280,661.98 × 145,491.47
  4. Step 4: Simplify right side
    203,565.43x = 40,833,924,043.31
  5. Step 5: Solve for x
    x = 40,833,924,043.31/203,565.43
  6. Step 6: Final answer
    x = 200,593.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.