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Finding the Fourth Proportional to 204,781.61, 307,150.59 and 71,664.41

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Solution

The fourth proportional to 204,781.61, 307,150.59 and 71,664.41 is: 107,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,781.61 : 307,150.59 = 71,664.41 : x
  2. Step 2: Convert to fraction form
    204,781.61/307,150.59 = 71,664.41/x
  3. Step 3: Cross multiply
    204,781.61x = 307,150.59 × 71,664.41
  4. Step 4: Simplify right side
    204,781.61x = 22,011,765,813.50
  5. Step 5: Solve for x
    x = 22,011,765,813.50/204,781.61
  6. Step 6: Final answer
    x = 107,488.98

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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.