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Finding the Fourth Proportional to 205,693.61, 308,395.52 and 79,227.90

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Solution

The fourth proportional to 205,693.61, 308,395.52 and 79,227.90 is: 118,786.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,693.61 : 308,395.52 = 79,227.90 : x
  2. Step 2: Convert to fraction form
    205,693.61/308,395.52 = 79,227.90/x
  3. Step 3: Cross multiply
    205,693.61x = 308,395.52 × 79,227.90
  4. Step 4: Simplify right side
    205,693.61x = 24,433,529,419.01
  5. Step 5: Solve for x
    x = 24,433,529,419.01/205,693.61
  6. Step 6: Final answer
    x = 118,786.04

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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.