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Finding the Fourth Proportional to 224,479.40, 309,788.12 and 122,511.44

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Solution

The fourth proportional to 224,479.40, 309,788.12 and 122,511.44 is: 169,069.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,479.40 : 309,788.12 = 122,511.44 : x
  2. Step 2: Convert to fraction form
    224,479.40/309,788.12 = 122,511.44/x
  3. Step 3: Cross multiply
    224,479.40x = 309,788.12 × 122,511.44
  4. Step 4: Simplify right side
    224,479.40x = 37,952,588,676.09
  5. Step 5: Solve for x
    x = 37,952,588,676.09/224,479.40
  6. Step 6: Final answer
    x = 169,069.36

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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.