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Finding the Fourth Proportional to 392,512.40, 588,365.40 and 192,525.20

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Solution

The fourth proportional to 392,512.40, 588,365.40 and 192,525.20 is: 288,590.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,512.40 : 588,365.40 = 192,525.20 : x
  2. Step 2: Convert to fraction form
    392,512.40/588,365.40 = 192,525.20/x
  3. Step 3: Cross multiply
    392,512.40x = 588,365.40 × 192,525.20
  4. Step 4: Simplify right side
    392,512.40x = 113,275,166,308.08
  5. Step 5: Solve for x
    x = 113,275,166,308.08/392,512.40
  6. Step 6: Final answer
    x = 288,590.03

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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.