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Finding the Fourth Proportional to 271,839.60, 407,759.40 and 165,551.40

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Solution

The fourth proportional to 271,839.60, 407,759.40 and 165,551.40 is: 248,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,839.60 : 407,759.40 = 165,551.40 : x
  2. Step 2: Convert to fraction form
    271,839.60/407,759.40 = 165,551.40/x
  3. Step 3: Cross multiply
    271,839.60x = 407,759.40 × 165,551.40
  4. Step 4: Simplify right side
    271,839.60x = 67,505,139,533.16
  5. Step 5: Solve for x
    x = 67,505,139,533.16/271,839.60
  6. Step 6: Final answer
    x = 248,327.10

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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.