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Finding the Fourth Proportional to 218,005.92, 300,930.38 and 127,391.34

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Solution

The fourth proportional to 218,005.92, 300,930.38 and 127,391.34 is: 175,848.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,005.92 : 300,930.38 = 127,391.34 : x
  2. Step 2: Convert to fraction form
    218,005.92/300,930.38 = 127,391.34/x
  3. Step 3: Cross multiply
    218,005.92x = 300,930.38 × 127,391.34
  4. Step 4: Simplify right side
    218,005.92x = 38,335,924,354.91
  5. Step 5: Solve for x
    x = 38,335,924,354.91/218,005.92
  6. Step 6: Final answer
    x = 175,848.09

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1.5x scale

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.