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Finding the Fourth Proportional to 311,937.40, 467,598.90 and 154,190.20

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Solution

The fourth proportional to 311,937.40, 467,598.90 and 154,190.20 is: 231,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,937.40 : 467,598.90 = 154,190.20 : x
  2. Step 2: Convert to fraction form
    311,937.40/467,598.90 = 154,190.20/x
  3. Step 3: Cross multiply
    311,937.40x = 467,598.90 × 154,190.20
  4. Step 4: Simplify right side
    311,937.40x = 72,099,167,910.78
  5. Step 5: Solve for x
    x = 72,099,167,910.78/311,937.40
  6. Step 6: Final answer
    x = 231,133.45

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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.