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Finding the Fourth Proportional to 300,405.80, 449,442.30 and 195,429.80

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Solution

The fourth proportional to 300,405.80, 449,442.30 and 195,429.80 is: 292,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,405.80 : 449,442.30 = 195,429.80 : x
  2. Step 2: Convert to fraction form
    300,405.80/449,442.30 = 195,429.80/x
  3. Step 3: Cross multiply
    300,405.80x = 449,442.30 × 195,429.80
  4. Step 4: Simplify right side
    300,405.80x = 87,834,418,800.54
  5. Step 5: Solve for x
    x = 87,834,418,800.54/300,405.80
  6. Step 6: Final answer
    x = 292,385.90

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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.