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Finding the Fourth Proportional to 226,648.80, 339,973.20 and 78,904.80

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Solution

The fourth proportional to 226,648.80, 339,973.20 and 78,904.80 is: 118,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,648.80 : 339,973.20 = 78,904.80 : x
  2. Step 2: Convert to fraction form
    226,648.80/339,973.20 = 78,904.80/x
  3. Step 3: Cross multiply
    226,648.80x = 339,973.20 × 78,904.80
  4. Step 4: Simplify right side
    226,648.80x = 26,825,517,351.36
  5. Step 5: Solve for x
    x = 26,825,517,351.36/226,648.80
  6. Step 6: Final answer
    x = 118,357.20

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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.