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Finding the Fourth Proportional to 247,605.86, 371,269.38 and 79,086.60

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Solution

The fourth proportional to 247,605.86, 371,269.38 and 79,086.60 is: 118,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,605.86 : 371,269.38 = 79,086.60 : x
  2. Step 2: Convert to fraction form
    247,605.86/371,269.38 = 79,086.60/x
  3. Step 3: Cross multiply
    247,605.86x = 371,269.38 × 79,086.60
  4. Step 4: Simplify right side
    247,605.86x = 29,362,432,948.31
  5. Step 5: Solve for x
    x = 29,362,432,948.31/247,605.86
  6. Step 6: Final answer
    x = 118,585.37

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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.