Home / 442,821.40-664,145.70-143,229.40

Finding the Fourth Proportional to 442,821.40, 664,145.70 and 143,229.40

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Solution

The fourth proportional to 442,821.40, 664,145.70 and 143,229.40 is: 214,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,821.40 : 664,145.70 = 143,229.40 : x
  2. Step 2: Convert to fraction form
    442,821.40/664,145.70 = 143,229.40/x
  3. Step 3: Cross multiply
    442,821.40x = 664,145.70 × 143,229.40
  4. Step 4: Simplify right side
    442,821.40x = 95,125,190,123.58
  5. Step 5: Solve for x
    x = 95,125,190,123.58/442,821.40
  6. Step 6: Final answer
    x = 214,816.15

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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.