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Finding the Fourth Proportional to 398,930.75, 550,521.81 and 226,848.72

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Solution

The fourth proportional to 398,930.75, 550,521.81 and 226,848.72 is: 313,049.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,930.75 : 550,521.81 = 226,848.72 : x
  2. Step 2: Convert to fraction form
    398,930.75/550,521.81 = 226,848.72/x
  3. Step 3: Cross multiply
    398,930.75x = 550,521.81 × 226,848.72
  4. Step 4: Simplify right side
    398,930.75x = 124,885,170,952.06
  5. Step 5: Solve for x
    x = 124,885,170,952.06/398,930.75
  6. Step 6: Final answer
    x = 313,049.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.