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Finding the Fourth Proportional to 216,468.05, 324,686.68 and 66,692.77

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Solution

The fourth proportional to 216,468.05, 324,686.68 and 66,692.77 is: 100,034.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,468.05 : 324,686.68 = 66,692.77 : x
  2. Step 2: Convert to fraction form
    216,468.05/324,686.68 = 66,692.77/x
  3. Step 3: Cross multiply
    216,468.05x = 324,686.68 × 66,692.77
  4. Step 4: Simplify right side
    216,468.05x = 21,654,253,092.86
  5. Step 5: Solve for x
    x = 21,654,253,092.86/216,468.05
  6. Step 6: Final answer
    x = 100,034.41

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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.