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Finding the Fourth Proportional to 218,998.41, 328,556.03 and 69,241.52

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Solution

The fourth proportional to 218,998.41, 328,556.03 and 69,241.52 is: 103,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,998.41 : 328,556.03 = 69,241.52 : x
  2. Step 2: Convert to fraction form
    218,998.41/328,556.03 = 69,241.52/x
  3. Step 3: Cross multiply
    218,998.41x = 328,556.03 × 69,241.52
  4. Step 4: Simplify right side
    218,998.41x = 22,749,716,933.38
  5. Step 5: Solve for x
    x = 22,749,716,933.38/218,998.41
  6. Step 6: Final answer
    x = 103,880.74

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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.