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Finding the Fourth Proportional to 271,480.20, 407,220.30 and 187,499.40

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Solution

The fourth proportional to 271,480.20, 407,220.30 and 187,499.40 is: 281,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,480.20 : 407,220.30 = 187,499.40 : x
  2. Step 2: Convert to fraction form
    271,480.20/407,220.30 = 187,499.40/x
  3. Step 3: Cross multiply
    271,480.20x = 407,220.30 × 187,499.40
  4. Step 4: Simplify right side
    271,480.20x = 76,353,561,917.82
  5. Step 5: Solve for x
    x = 76,353,561,917.82/271,480.20
  6. Step 6: Final answer
    x = 281,249.10

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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.