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Finding the Fourth Proportional to 443,404.52, 665,205.20 and 127,836.80

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Solution

The fourth proportional to 443,404.52, 665,205.20 and 127,836.80 is: 191,783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,404.52 : 665,205.20 = 127,836.80 : x
  2. Step 2: Convert to fraction form
    443,404.52/665,205.20 = 127,836.80/x
  3. Step 3: Cross multiply
    443,404.52x = 665,205.20 × 127,836.80
  4. Step 4: Simplify right side
    443,404.52x = 85,037,704,111.36
  5. Step 5: Solve for x
    x = 85,037,704,111.36/443,404.52
  6. Step 6: Final answer
    x = 191,783.58

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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.