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Finding the Fourth Proportional to 266,695.60, 400,043.40 and 161,719.60

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Solution

The fourth proportional to 266,695.60, 400,043.40 and 161,719.60 is: 242,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,695.60 : 400,043.40 = 161,719.60 : x
  2. Step 2: Convert to fraction form
    266,695.60/400,043.40 = 161,719.60/x
  3. Step 3: Cross multiply
    266,695.60x = 400,043.40 × 161,719.60
  4. Step 4: Simplify right side
    266,695.60x = 64,694,858,630.64
  5. Step 5: Solve for x
    x = 64,694,858,630.64/266,695.60
  6. Step 6: Final answer
    x = 242,579.40

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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.