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Finding the Fourth Proportional to 392,600.47, 588,955.79 and 192,928.72

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Solution

The fourth proportional to 392,600.47, 588,955.79 and 192,928.72 is: 289,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,600.47 : 588,955.79 = 192,928.72 : x
  2. Step 2: Convert to fraction form
    392,600.47/588,955.79 = 192,928.72/x
  3. Step 3: Cross multiply
    392,600.47x = 588,955.79 × 192,928.72
  4. Step 4: Simplify right side
    392,600.47x = 113,626,486,701.29
  5. Step 5: Solve for x
    x = 113,626,486,701.29/392,600.47
  6. Step 6: Final answer
    x = 289,420.15

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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.