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Finding the Fourth Proportional to 216,375.03, 324,493.28 and 72,249.90

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Solution

The fourth proportional to 216,375.03, 324,493.28 and 72,249.90 is: 108,351.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,375.03 : 324,493.28 = 72,249.90 : x
  2. Step 2: Convert to fraction form
    216,375.03/324,493.28 = 72,249.90/x
  3. Step 3: Cross multiply
    216,375.03x = 324,493.28 × 72,249.90
  4. Step 4: Simplify right side
    216,375.03x = 23,444,607,030.67
  5. Step 5: Solve for x
    x = 23,444,607,030.67/216,375.03
  6. Step 6: Final answer
    x = 108,351.72

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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.