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Finding the Fourth Proportional to 275,558.60, 412,944.30 and 156,979.40

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Solution

The fourth proportional to 275,558.60, 412,944.30 and 156,979.40 is: 235,244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,558.60 : 412,944.30 = 156,979.40 : x
  2. Step 2: Convert to fraction form
    275,558.60/412,944.30 = 156,979.40/x
  3. Step 3: Cross multiply
    275,558.60x = 412,944.30 × 156,979.40
  4. Step 4: Simplify right side
    275,558.60x = 64,823,748,447.42
  5. Step 5: Solve for x
    x = 64,823,748,447.42/275,558.60
  6. Step 6: Final answer
    x = 235,244.88

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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.