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Finding the Fourth Proportional to 216,468.56, 324,733.32 and 66,720.92

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Solution

The fourth proportional to 216,468.56, 324,733.32 and 66,720.92 is: 100,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,468.56 : 324,733.32 = 66,720.92 : x
  2. Step 2: Convert to fraction form
    216,468.56/324,733.32 = 66,720.92/x
  3. Step 3: Cross multiply
    216,468.56x = 324,733.32 × 66,720.92
  4. Step 4: Simplify right side
    216,468.56x = 21,666,505,865.05
  5. Step 5: Solve for x
    x = 21,666,505,865.05/216,468.56
  6. Step 6: Final answer
    x = 100,090.77

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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.