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Finding the Fourth Proportional to 247,327.80, 371,018.57 and 78,808.52

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Solution

The fourth proportional to 247,327.80, 371,018.57 and 78,808.52 is: 118,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,327.80 : 371,018.57 = 78,808.52 : x
  2. Step 2: Convert to fraction form
    247,327.80/371,018.57 = 78,808.52/x
  3. Step 3: Cross multiply
    247,327.80x = 371,018.57 × 78,808.52
  4. Step 4: Simplify right side
    247,327.80x = 29,239,422,145.08
  5. Step 5: Solve for x
    x = 29,239,422,145.08/247,327.80
  6. Step 6: Final answer
    x = 118,221.33

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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.