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Finding the Fourth Proportional to 219,403.53, 329,105.34 and 79,162.11

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Solution

The fourth proportional to 219,403.53, 329,105.34 and 79,162.11 is: 118,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,403.53 : 329,105.34 = 79,162.11 : x
  2. Step 2: Convert to fraction form
    219,403.53/329,105.34 = 79,162.11/x
  3. Step 3: Cross multiply
    219,403.53x = 329,105.34 × 79,162.11
  4. Step 4: Simplify right side
    219,403.53x = 26,052,673,126.67
  5. Step 5: Solve for x
    x = 26,052,673,126.67/219,403.53
  6. Step 6: Final answer
    x = 118,743.18

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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.