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Finding the Fourth Proportional to 281,922.48, 389,058.36 and 154,590.48

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Solution

The fourth proportional to 281,922.48, 389,058.36 and 154,590.48 is: 213,337.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,922.48 : 389,058.36 = 154,590.48 : x
  2. Step 2: Convert to fraction form
    281,922.48/389,058.36 = 154,590.48/x
  3. Step 3: Cross multiply
    281,922.48x = 389,058.36 × 154,590.48
  4. Step 4: Simplify right side
    281,922.48x = 60,144,718,620.41
  5. Step 5: Solve for x
    x = 60,144,718,620.41/281,922.48
  6. Step 6: Final answer
    x = 213,337.79

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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.