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Finding the Fourth Proportional to 321,137.70, 443,079.54 and 185,160.96

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Solution

The fourth proportional to 321,137.70, 443,079.54 and 185,160.96 is: 255,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,137.70 : 443,079.54 = 185,160.96 : x
  2. Step 2: Convert to fraction form
    321,137.70/443,079.54 = 185,160.96/x
  3. Step 3: Cross multiply
    321,137.70x = 443,079.54 × 185,160.96
  4. Step 4: Simplify right side
    321,137.70x = 82,041,032,982.76
  5. Step 5: Solve for x
    x = 82,041,032,982.76/321,137.70
  6. Step 6: Final answer
    x = 255,469.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.