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Finding the Fourth Proportional to 229,910.62, 317,273.61 and 129,308.62

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Solution

The fourth proportional to 229,910.62, 317,273.61 and 129,308.62 is: 178,444.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,910.62 : 317,273.61 = 129,308.62 : x
  2. Step 2: Convert to fraction form
    229,910.62/317,273.61 = 129,308.62/x
  3. Step 3: Cross multiply
    229,910.62x = 317,273.61 × 129,308.62
  4. Step 4: Simplify right side
    229,910.62x = 41,026,212,671.52
  5. Step 5: Solve for x
    x = 41,026,212,671.52/229,910.62
  6. Step 6: Final answer
    x = 178,444.18

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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.