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Finding the Fourth Proportional to 247,608.82, 371,409 and 79,127.92

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Solution

The fourth proportional to 247,608.82, 371,409 and 79,127.92 is: 118,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,608.82 : 371,409 = 79,127.92 : x
  2. Step 2: Convert to fraction form
    247,608.82/371,409 = 79,127.92/x
  3. Step 3: Cross multiply
    247,608.82x = 371,409 × 79,127.92
  4. Step 4: Simplify right side
    247,608.82x = 29,388,821,639.28
  5. Step 5: Solve for x
    x = 29,388,821,639.28/247,608.82
  6. Step 6: Final answer
    x = 118,690.53

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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.