Home / 442,945.40-664,515.30-143,439.80

Finding the Fourth Proportional to 442,945.40, 664,515.30 and 143,439.80

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Solution

The fourth proportional to 442,945.40, 664,515.30 and 143,439.80 is: 215,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,945.40 : 664,515.30 = 143,439.80 : x
  2. Step 2: Convert to fraction form
    442,945.40/664,515.30 = 143,439.80/x
  3. Step 3: Cross multiply
    442,945.40x = 664,515.30 × 143,439.80
  4. Step 4: Simplify right side
    442,945.40x = 95,317,941,728.94
  5. Step 5: Solve for x
    x = 95,317,941,728.94/442,945.40
  6. Step 6: Final answer
    x = 215,191.18

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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.