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Finding the Fourth Proportional to 271,423.40, 407,135.10 and 131,455.40

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Solution

The fourth proportional to 271,423.40, 407,135.10 and 131,455.40 is: 197,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,423.40 : 407,135.10 = 131,455.40 : x
  2. Step 2: Convert to fraction form
    271,423.40/407,135.10 = 131,455.40/x
  3. Step 3: Cross multiply
    271,423.40x = 407,135.10 × 131,455.40
  4. Step 4: Simplify right side
    271,423.40x = 53,520,107,424.54
  5. Step 5: Solve for x
    x = 53,520,107,424.54/271,423.40
  6. Step 6: Final answer
    x = 197,183.10

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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.