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Finding the Fourth Proportional to 216,625.22, 324,812.74 and 66,825.28

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Solution

The fourth proportional to 216,625.22, 324,812.74 and 66,825.28 is: 100,199.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,625.22 : 324,812.74 = 66,825.28 : x
  2. Step 2: Convert to fraction form
    216,625.22/324,812.74 = 66,825.28/x
  3. Step 3: Cross multiply
    216,625.22x = 324,812.74 × 66,825.28
  4. Step 4: Simplify right side
    216,625.22x = 21,705,702,298.07
  5. Step 5: Solve for x
    x = 21,705,702,298.07/216,625.22
  6. Step 6: Final answer
    x = 100,199.33

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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.