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Finding the Fourth Proportional to 361,256.80, 541,885.20 and 219,539.20

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Solution

The fourth proportional to 361,256.80, 541,885.20 and 219,539.20 is: 329,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,256.80 : 541,885.20 = 219,539.20 : x
  2. Step 2: Convert to fraction form
    361,256.80/541,885.20 = 219,539.20/x
  3. Step 3: Cross multiply
    361,256.80x = 541,885.20 × 219,539.20
  4. Step 4: Simplify right side
    361,256.80x = 118,965,043,299.84
  5. Step 5: Solve for x
    x = 118,965,043,299.84/361,256.80
  6. Step 6: Final answer
    x = 329,308.80

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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.