Home / 447,144.32-670,734.72-143,569.28

Finding the Fourth Proportional to 447,144.32, 670,734.72 and 143,569.28

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Solution

The fourth proportional to 447,144.32, 670,734.72 and 143,569.28 is: 215,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,144.32 : 670,734.72 = 143,569.28 : x
  2. Step 2: Convert to fraction form
    447,144.32/670,734.72 = 143,569.28/x
  3. Step 3: Cross multiply
    447,144.32x = 670,734.72 × 143,569.28
  4. Step 4: Simplify right side
    447,144.32x = 96,296,900,821.40
  5. Step 5: Solve for x
    x = 96,296,900,821.40/447,144.32
  6. Step 6: Final answer
    x = 215,359.78

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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.