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Finding the Fourth Proportional to 216,371.22, 324,566.85 and 66,618.22

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Solution

The fourth proportional to 216,371.22, 324,566.85 and 66,618.22 is: 99,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,371.22 : 324,566.85 = 66,618.22 : x
  2. Step 2: Convert to fraction form
    216,371.22/324,566.85 = 66,618.22/x
  3. Step 3: Cross multiply
    216,371.22x = 324,566.85 × 66,618.22
  4. Step 4: Simplify right side
    216,371.22x = 21,622,064,195.17
  5. Step 5: Solve for x
    x = 21,622,064,195.17/216,371.22
  6. Step 6: Final answer
    x = 99,930.41

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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.