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Finding the Fourth Proportional to 220,893.40, 331,340.10 and 154,408.60

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Solution

The fourth proportional to 220,893.40, 331,340.10 and 154,408.60 is: 231,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,893.40 : 331,340.10 = 154,408.60 : x
  2. Step 2: Convert to fraction form
    220,893.40/331,340.10 = 154,408.60/x
  3. Step 3: Cross multiply
    220,893.40x = 331,340.10 × 154,408.60
  4. Step 4: Simplify right side
    220,893.40x = 51,161,760,964.86
  5. Step 5: Solve for x
    x = 51,161,760,964.86/220,893.40
  6. Step 6: Final answer
    x = 231,612.90

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1.5x scale

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.