Home / 392,727.75-588,542.39-212,423.79

Finding the Fourth Proportional to 392,727.75, 588,542.39 and 212,423.79

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Solution

The fourth proportional to 392,727.75, 588,542.39 and 212,423.79 is: 318,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,727.75 : 588,542.39 = 212,423.79 : x
  2. Step 2: Convert to fraction form
    392,727.75/588,542.39 = 212,423.79/x
  3. Step 3: Cross multiply
    392,727.75x = 588,542.39 × 212,423.79
  4. Step 4: Simplify right side
    392,727.75x = 125,020,403,997.34
  5. Step 5: Solve for x
    x = 125,020,403,997.34/392,727.75
  6. Step 6: Final answer
    x = 318,338.60

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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.