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Finding the Fourth Proportional to 229,400.72, 316,540.68 and 127,418.48

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Solution

The fourth proportional to 229,400.72, 316,540.68 and 127,418.48 is: 175,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,400.72 : 316,540.68 = 127,418.48 : x
  2. Step 2: Convert to fraction form
    229,400.72/316,540.68 = 127,418.48/x
  3. Step 3: Cross multiply
    229,400.72x = 316,540.68 × 127,418.48
  4. Step 4: Simplify right side
    229,400.72x = 40,333,132,303.77
  5. Step 5: Solve for x
    x = 40,333,132,303.77/229,400.72
  6. Step 6: Final answer
    x = 175,819.55

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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.