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Finding the Fourth Proportional to 217,996.74, 326,991.87 and 60,221.70

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Solution

The fourth proportional to 217,996.74, 326,991.87 and 60,221.70 is: 90,331.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,996.74 : 326,991.87 = 60,221.70 : x
  2. Step 2: Convert to fraction form
    217,996.74/326,991.87 = 60,221.70/x
  3. Step 3: Cross multiply
    217,996.74x = 326,991.87 × 60,221.70
  4. Step 4: Simplify right side
    217,996.74x = 19,692,006,297.58
  5. Step 5: Solve for x
    x = 19,692,006,297.58/217,996.74
  6. Step 6: Final answer
    x = 90,331.65

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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.