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Finding the Fourth Proportional to 220,065.66, 329,974.56 and 70,270.74

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Solution

The fourth proportional to 220,065.66, 329,974.56 and 70,270.74 is: 105,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,065.66 : 329,974.56 = 70,270.74 : x
  2. Step 2: Convert to fraction form
    220,065.66/329,974.56 = 70,270.74/x
  3. Step 3: Cross multiply
    220,065.66x = 329,974.56 × 70,270.74
  4. Step 4: Simplify right side
    220,065.66x = 23,187,556,512.37
  5. Step 5: Solve for x
    x = 23,187,556,512.37/220,065.66
  6. Step 6: Final answer
    x = 105,366.54

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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.