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Finding the Fourth Proportional to 392,562.40, 588,843.60 and 143,341.60

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Solution

The fourth proportional to 392,562.40, 588,843.60 and 143,341.60 is: 215,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,562.40 : 588,843.60 = 143,341.60 : x
  2. Step 2: Convert to fraction form
    392,562.40/588,843.60 = 143,341.60/x
  3. Step 3: Cross multiply
    392,562.40x = 588,843.60 × 143,341.60
  4. Step 4: Simplify right side
    392,562.40x = 84,405,783,773.76
  5. Step 5: Solve for x
    x = 84,405,783,773.76/392,562.40
  6. Step 6: Final answer
    x = 215,012.40

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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.