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Finding the Fourth Proportional to 271,484.40, 407,226.60 and 259,966.20

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Solution

The fourth proportional to 271,484.40, 407,226.60 and 259,966.20 is: 389,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,484.40 : 407,226.60 = 259,966.20 : x
  2. Step 2: Convert to fraction form
    271,484.40/407,226.60 = 259,966.20/x
  3. Step 3: Cross multiply
    271,484.40x = 407,226.60 × 259,966.20
  4. Step 4: Simplify right side
    271,484.40x = 105,865,151,740.92
  5. Step 5: Solve for x
    x = 105,865,151,740.92/271,484.40
  6. Step 6: Final answer
    x = 389,949.30

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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.