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Finding the Fourth Proportional to 281,514.56, 388,497.65 and 158,997.11

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Solution

The fourth proportional to 281,514.56, 388,497.65 and 158,997.11 is: 219,420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,514.56 : 388,497.65 = 158,997.11 : x
  2. Step 2: Convert to fraction form
    281,514.56/388,497.65 = 158,997.11/x
  3. Step 3: Cross multiply
    281,514.56x = 388,497.65 × 158,997.11
  4. Step 4: Simplify right side
    281,514.56x = 61,770,003,591.79
  5. Step 5: Solve for x
    x = 61,770,003,591.79/281,514.56
  6. Step 6: Final answer
    x = 219,420.28

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1.5x scale

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.