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Finding the Fourth Proportional to 494,138.60, 741,207.90 and 120,161.60

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Solution

The fourth proportional to 494,138.60, 741,207.90 and 120,161.60 is: 180,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,138.60 : 741,207.90 = 120,161.60 : x
  2. Step 2: Convert to fraction form
    494,138.60/741,207.90 = 120,161.60/x
  3. Step 3: Cross multiply
    494,138.60x = 741,207.90 × 120,161.60
  4. Step 4: Simplify right side
    494,138.60x = 89,064,727,196.64
  5. Step 5: Solve for x
    x = 89,064,727,196.64/494,138.60
  6. Step 6: Final answer
    x = 180,242.40

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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.