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Finding the Fourth Proportional to 219,811.67, 329,200.81 and 107,138.79

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Solution

The fourth proportional to 219,811.67, 329,200.81 and 107,138.79 is: 160,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,811.67 : 329,200.81 = 107,138.79 : x
  2. Step 2: Convert to fraction form
    219,811.67/329,200.81 = 107,138.79/x
  3. Step 3: Cross multiply
    219,811.67x = 329,200.81 × 107,138.79
  4. Step 4: Simplify right side
    219,811.67x = 35,270,176,450.42
  5. Step 5: Solve for x
    x = 35,270,176,450.42/219,811.67
  6. Step 6: Final answer
    x = 160,456.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.