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Finding the Fourth Proportional to 208,351.87, 312,384.18 and 82,006.62

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Solution

The fourth proportional to 208,351.87, 312,384.18 and 82,006.62 is: 122,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,351.87 : 312,384.18 = 82,006.62 : x
  2. Step 2: Convert to fraction form
    208,351.87/312,384.18 = 82,006.62/x
  3. Step 3: Cross multiply
    208,351.87x = 312,384.18 × 82,006.62
  4. Step 4: Simplify right side
    208,351.87x = 25,617,570,743.27
  5. Step 5: Solve for x
    x = 25,617,570,743.27/208,351.87
  6. Step 6: Final answer
    x = 122,953.40

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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.