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Finding the Fourth Proportional to 279,357.28, 418,801.20 and 226,636

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Solution

The fourth proportional to 279,357.28, 418,801.20 and 226,636 is: 339,763.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,357.28 : 418,801.20 = 226,636 : x
  2. Step 2: Convert to fraction form
    279,357.28/418,801.20 = 226,636/x
  3. Step 3: Cross multiply
    279,357.28x = 418,801.20 × 226,636
  4. Step 4: Simplify right side
    279,357.28x = 94,915,428,763.20
  5. Step 5: Solve for x
    x = 94,915,428,763.20/279,357.28
  6. Step 6: Final answer
    x = 339,763.58

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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.