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Finding the Fourth Proportional to 300,043.20, 449,719.20 and 122,462.40

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Solution

The fourth proportional to 300,043.20, 449,719.20 and 122,462.40 is: 183,552.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,043.20 : 449,719.20 = 122,462.40 : x
  2. Step 2: Convert to fraction form
    300,043.20/449,719.20 = 122,462.40/x
  3. Step 3: Cross multiply
    300,043.20x = 449,719.20 × 122,462.40
  4. Step 4: Simplify right side
    300,043.20x = 55,073,692,558.08
  5. Step 5: Solve for x
    x = 55,073,692,558.08/300,043.20
  6. Step 6: Final answer
    x = 183,552.54

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1.5x scale

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.