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Finding the Fourth Proportional to 275,746.08, 380,502.72 and 154,860

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Solution

The fourth proportional to 275,746.08, 380,502.72 and 154,860 is: 213,691.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,746.08 : 380,502.72 = 154,860 : x
  2. Step 2: Convert to fraction form
    275,746.08/380,502.72 = 154,860/x
  3. Step 3: Cross multiply
    275,746.08x = 380,502.72 × 154,860
  4. Step 4: Simplify right side
    275,746.08x = 58,924,651,219.20
  5. Step 5: Solve for x
    x = 58,924,651,219.20/275,746.08
  6. Step 6: Final answer
    x = 213,691.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.