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Finding the Fourth Proportional to 300,400.80, 449,434.80 and 195,424.80

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Solution

The fourth proportional to 300,400.80, 449,434.80 and 195,424.80 is: 292,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,400.80 : 449,434.80 = 195,424.80 : x
  2. Step 2: Convert to fraction form
    300,400.80/449,434.80 = 195,424.80/x
  3. Step 3: Cross multiply
    300,400.80x = 449,434.80 × 195,424.80
  4. Step 4: Simplify right side
    300,400.80x = 87,830,705,903.04
  5. Step 5: Solve for x
    x = 87,830,705,903.04/300,400.80
  6. Step 6: Final answer
    x = 292,378.40

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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.