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Finding the Fourth Proportional to 198,339.84, 273,709.44 and 108,921.60

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Solution

The fourth proportional to 198,339.84, 273,709.44 and 108,921.60 is: 150,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,339.84 : 273,709.44 = 108,921.60 : x
  2. Step 2: Convert to fraction form
    198,339.84/273,709.44 = 108,921.60/x
  3. Step 3: Cross multiply
    198,339.84x = 273,709.44 × 108,921.60
  4. Step 4: Simplify right side
    198,339.84x = 29,812,870,139.90
  5. Step 5: Solve for x
    x = 29,812,870,139.90/198,339.84
  6. Step 6: Final answer
    x = 150,312.06

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1.5x scale

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.