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Finding the Fourth Proportional to 271,859.20, 381,390.20 and 271,859.20

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Solution

The fourth proportional to 271,859.20, 381,390.20 and 271,859.20 is: 381,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,859.20 : 381,390.20 = 271,859.20 : x
  2. Step 2: Convert to fraction form
    271,859.20/381,390.20 = 271,859.20/x
  3. Step 3: Cross multiply
    271,859.20x = 381,390.20 × 271,859.20
  4. Step 4: Simplify right side
    271,859.20x = 103,684,434,659.84
  5. Step 5: Solve for x
    x = 103,684,434,659.84/271,859.20
  6. Step 6: Final answer
    x = 381,390.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.