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Finding the Fourth Proportional to 216,018.42, 324,080.22 and 71,923.86

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Solution

The fourth proportional to 216,018.42, 324,080.22 and 71,923.86 is: 107,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,018.42 : 324,080.22 = 71,923.86 : x
  2. Step 2: Convert to fraction form
    216,018.42/324,080.22 = 71,923.86/x
  3. Step 3: Cross multiply
    216,018.42x = 324,080.22 × 71,923.86
  4. Step 4: Simplify right side
    216,018.42x = 23,309,100,490.64
  5. Step 5: Solve for x
    x = 23,309,100,490.64/216,018.42
  6. Step 6: Final answer
    x = 107,903.30

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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.