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Finding the Fourth Proportional to 271,976.46, 407,964.62 and 84,987.96

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Solution

The fourth proportional to 271,976.46, 407,964.62 and 84,987.96 is: 127,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,976.46 : 407,964.62 = 84,987.96 : x
  2. Step 2: Convert to fraction form
    271,976.46/407,964.62 = 84,987.96/x
  3. Step 3: Cross multiply
    271,976.46x = 407,964.62 × 84,987.96
  4. Step 4: Simplify right side
    271,976.46x = 34,672,080,381.04
  5. Step 5: Solve for x
    x = 34,672,080,381.04/271,976.46
  6. Step 6: Final answer
    x = 127,481.92

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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.