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Finding the Fourth Proportional to 281,926.54, 389,058.48 and 154,604.86

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Solution

The fourth proportional to 281,926.54, 389,058.48 and 154,604.86 is: 213,354.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,926.54 : 389,058.48 = 154,604.86 : x
  2. Step 2: Convert to fraction form
    281,926.54/389,058.48 = 154,604.86/x
  3. Step 3: Cross multiply
    281,926.54x = 389,058.48 × 154,604.86
  4. Step 4: Simplify right side
    281,926.54x = 60,150,331,832.21
  5. Step 5: Solve for x
    x = 60,150,331,832.21/281,926.54
  6. Step 6: Final answer
    x = 213,354.63

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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.