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Finding the Fourth Proportional to 271,985.20, 407,632.20 and 131,441.20

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Solution

The fourth proportional to 271,985.20, 407,632.20 and 131,441.20 is: 196,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,985.20 : 407,632.20 = 131,441.20 : x
  2. Step 2: Convert to fraction form
    271,985.20/407,632.20 = 131,441.20/x
  3. Step 3: Cross multiply
    271,985.20x = 407,632.20 × 131,441.20
  4. Step 4: Simplify right side
    271,985.20x = 53,579,665,526.64
  5. Step 5: Solve for x
    x = 53,579,665,526.64/271,985.20
  6. Step 6: Final answer
    x = 196,994.78

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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.