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Finding the Fourth Proportional to 392,473.25, 588,797.67 and 143,155.25

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Solution

The fourth proportional to 392,473.25, 588,797.67 and 143,155.25 is: 214,764.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,473.25 : 588,797.67 = 143,155.25 : x
  2. Step 2: Convert to fraction form
    392,473.25/588,797.67 = 143,155.25/x
  3. Step 3: Cross multiply
    392,473.25x = 588,797.67 × 143,155.25
  4. Step 4: Simplify right side
    392,473.25x = 84,289,477,648.27
  5. Step 5: Solve for x
    x = 84,289,477,648.27/392,473.25
  6. Step 6: Final answer
    x = 214,764.90

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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.