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Finding the Fourth Proportional to 208,002.87, 312,044.76 and 79,909.82

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Solution

The fourth proportional to 208,002.87, 312,044.76 and 79,909.82 is: 119,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,002.87 : 312,044.76 = 79,909.82 : x
  2. Step 2: Convert to fraction form
    208,002.87/312,044.76 = 79,909.82/x
  3. Step 3: Cross multiply
    208,002.87x = 312,044.76 × 79,909.82
  4. Step 4: Simplify right side
    208,002.87x = 24,935,441,383.66
  5. Step 5: Solve for x
    x = 24,935,441,383.66/208,002.87
  6. Step 6: Final answer
    x = 119,880.28

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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.