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Finding the Fourth Proportional to 219,394.40, 329,056.40 and 79,080.80

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Solution

The fourth proportional to 219,394.40, 329,056.40 and 79,080.80 is: 118,608.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,394.40 : 329,056.40 = 79,080.80 : x
  2. Step 2: Convert to fraction form
    219,394.40/329,056.40 = 79,080.80/x
  3. Step 3: Cross multiply
    219,394.40x = 329,056.40 × 79,080.80
  4. Step 4: Simplify right side
    219,394.40x = 26,022,043,357.12
  5. Step 5: Solve for x
    x = 26,022,043,357.12/219,394.40
  6. Step 6: Final answer
    x = 118,608.51

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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.