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Finding the Fourth Proportional to 229,084.40, 343,043.40 and 218,586.80

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Solution

The fourth proportional to 229,084.40, 343,043.40 and 218,586.80 is: 327,323.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,084.40 : 343,043.40 = 218,586.80 : x
  2. Step 2: Convert to fraction form
    229,084.40/343,043.40 = 218,586.80/x
  3. Step 3: Cross multiply
    229,084.40x = 343,043.40 × 218,586.80
  4. Step 4: Simplify right side
    229,084.40x = 74,984,759,067.12
  5. Step 5: Solve for x
    x = 74,984,759,067.12/229,084.40
  6. Step 6: Final answer
    x = 327,323.72

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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.