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Finding the Fourth Proportional to 204,680.98, 307,021.47 and 79,934.50

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Solution

The fourth proportional to 204,680.98, 307,021.47 and 79,934.50 is: 119,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,680.98 : 307,021.47 = 79,934.50 : x
  2. Step 2: Convert to fraction form
    204,680.98/307,021.47 = 79,934.50/x
  3. Step 3: Cross multiply
    204,680.98x = 307,021.47 × 79,934.50
  4. Step 4: Simplify right side
    204,680.98x = 24,541,607,693.72
  5. Step 5: Solve for x
    x = 24,541,607,693.72/204,680.98
  6. Step 6: Final answer
    x = 119,901.75

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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.