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Finding the Fourth Proportional to 271,654.88, 407,485.12 and 82,116.80

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Solution

The fourth proportional to 271,654.88, 407,485.12 and 82,116.80 is: 123,176.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,654.88 : 407,485.12 = 82,116.80 : x
  2. Step 2: Convert to fraction form
    271,654.88/407,485.12 = 82,116.80/x
  3. Step 3: Cross multiply
    271,654.88x = 407,485.12 × 82,116.80
  4. Step 4: Simplify right side
    271,654.88x = 33,461,374,102.02
  5. Step 5: Solve for x
    x = 33,461,374,102.02/271,654.88
  6. Step 6: Final answer
    x = 123,176.05

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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.