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Finding the Fourth Proportional to 271,984.71, 407,976.99 and 84,996.21

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Solution

The fourth proportional to 271,984.71, 407,976.99 and 84,996.21 is: 127,494.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,984.71 : 407,976.99 = 84,996.21 : x
  2. Step 2: Convert to fraction form
    271,984.71/407,976.99 = 84,996.21/x
  3. Step 3: Cross multiply
    271,984.71x = 407,976.99 × 84,996.21
  4. Step 4: Simplify right side
    271,984.71x = 34,676,497,917.21
  5. Step 5: Solve for x
    x = 34,676,497,917.21/271,984.71
  6. Step 6: Final answer
    x = 127,494.29

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Double scale
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Similar ratio
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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.