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Finding the Fourth Proportional to 247,081.20, 370,621.80 and 89,314.80

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Solution

The fourth proportional to 247,081.20, 370,621.80 and 89,314.80 is: 133,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,081.20 : 370,621.80 = 89,314.80 : x
  2. Step 2: Convert to fraction form
    247,081.20/370,621.80 = 89,314.80/x
  3. Step 3: Cross multiply
    247,081.20x = 370,621.80 × 89,314.80
  4. Step 4: Simplify right side
    247,081.20x = 33,102,011,942.64
  5. Step 5: Solve for x
    x = 33,102,011,942.64/247,081.20
  6. Step 6: Final answer
    x = 133,972.20

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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.