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Finding the Fourth Proportional to 247,200, 370,811.52 and 72,096

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Solution

The fourth proportional to 247,200, 370,811.52 and 72,096 is: 108,147.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,200 : 370,811.52 = 72,096 : x
  2. Step 2: Convert to fraction form
    247,200/370,811.52 = 72,096/x
  3. Step 3: Cross multiply
    247,200x = 370,811.52 × 72,096
  4. Step 4: Simplify right side
    247,200x = 26,734,027,345.92
  5. Step 5: Solve for x
    x = 26,734,027,345.92/247,200
  6. Step 6: Final answer
    x = 108,147.36

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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.