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Finding the Fourth Proportional to 247,300, 341,025.60 and 219,991.12

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Solution

The fourth proportional to 247,300, 341,025.60 and 219,991.12 is: 303,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,300 : 341,025.60 = 219,991.12 : x
  2. Step 2: Convert to fraction form
    247,300/341,025.60 = 219,991.12/x
  3. Step 3: Cross multiply
    247,300x = 341,025.60 × 219,991.12
  4. Step 4: Simplify right side
    247,300x = 75,022,603,692.67
  5. Step 5: Solve for x
    x = 75,022,603,692.67/247,300
  6. Step 6: Final answer
    x = 303,366.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.