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Finding the Fourth Proportional to 229,878.43, 317,204.37 and 127,879.79

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Solution

The fourth proportional to 229,878.43, 317,204.37 and 127,879.79 is: 176,458.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,878.43 : 317,204.37 = 127,879.79 : x
  2. Step 2: Convert to fraction form
    229,878.43/317,204.37 = 127,879.79/x
  3. Step 3: Cross multiply
    229,878.43x = 317,204.37 × 127,879.79
  4. Step 4: Simplify right side
    229,878.43x = 40,564,026,636.66
  5. Step 5: Solve for x
    x = 40,564,026,636.66/229,878.43
  6. Step 6: Final answer
    x = 176,458.61

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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.