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Finding the Fourth Proportional to 418,819.34, 627,866.12 and 169,339.34

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Solution

The fourth proportional to 418,819.34, 627,866.12 and 169,339.34 is: 253,862.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,819.34 : 627,866.12 = 169,339.34 : x
  2. Step 2: Convert to fraction form
    418,819.34/627,866.12 = 169,339.34/x
  3. Step 3: Cross multiply
    418,819.34x = 627,866.12 × 169,339.34
  4. Step 4: Simplify right side
    418,819.34x = 106,322,431,653.18
  5. Step 5: Solve for x
    x = 106,322,431,653.18/418,819.34
  6. Step 6: Final answer
    x = 253,862.28

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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.