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Finding the Fourth Proportional to 271,728.15, 407,662.70 and 103,251.39

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Solution

The fourth proportional to 271,728.15, 407,662.70 and 103,251.39 is: 154,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,728.15 : 407,662.70 = 103,251.39 : x
  2. Step 2: Convert to fraction form
    271,728.15/407,662.70 = 103,251.39/x
  3. Step 3: Cross multiply
    271,728.15x = 407,662.70 × 103,251.39
  4. Step 4: Simplify right side
    271,728.15x = 42,091,739,909.90
  5. Step 5: Solve for x
    x = 42,091,739,909.90/271,728.15
  6. Step 6: Final answer
    x = 154,903.86

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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.