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Finding the Fourth Proportional to 392,752.56, 588,579.69 and 212,448.79

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Solution

The fourth proportional to 392,752.56, 588,579.69 and 212,448.79 is: 318,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,752.56 : 588,579.69 = 212,448.79 : x
  2. Step 2: Convert to fraction form
    392,752.56/588,579.69 = 212,448.79/x
  3. Step 3: Cross multiply
    392,752.56x = 588,579.69 × 212,448.79
  4. Step 4: Simplify right side
    392,752.56x = 125,043,040,016.18
  5. Step 5: Solve for x
    x = 125,043,040,016.18/392,752.56
  6. Step 6: Final answer
    x = 318,376.13

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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.