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Finding the Fourth Proportional to 218,967.48, 328,422.90 and 69,222.84

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Solution

The fourth proportional to 218,967.48, 328,422.90 and 69,222.84 is: 103,825.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,967.48 : 328,422.90 = 69,222.84 : x
  2. Step 2: Convert to fraction form
    218,967.48/328,422.90 = 69,222.84/x
  3. Step 3: Cross multiply
    218,967.48x = 328,422.90 × 69,222.84
  4. Step 4: Simplify right side
    218,967.48x = 22,734,365,859.04
  5. Step 5: Solve for x
    x = 22,734,365,859.04/218,967.48
  6. Step 6: Final answer
    x = 103,825.31

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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.