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Finding the Fourth Proportional to 218,756.88, 328,194.18 and 69,003

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Solution

The fourth proportional to 218,756.88, 328,194.18 and 69,003 is: 103,523.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,756.88 : 328,194.18 = 69,003 : x
  2. Step 2: Convert to fraction form
    218,756.88/328,194.18 = 69,003/x
  3. Step 3: Cross multiply
    218,756.88x = 328,194.18 × 69,003
  4. Step 4: Simplify right side
    218,756.88x = 22,646,383,002.54
  5. Step 5: Solve for x
    x = 22,646,383,002.54/218,756.88
  6. Step 6: Final answer
    x = 103,523.07

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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.