Home / 281,965.72-389,137.30-154,665.91

Finding the Fourth Proportional to 281,965.72, 389,137.30 and 154,665.91

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Solution

The fourth proportional to 281,965.72, 389,137.30 and 154,665.91 is: 213,452.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,965.72 : 389,137.30 = 154,665.91 : x
  2. Step 2: Convert to fraction form
    281,965.72/389,137.30 = 154,665.91/x
  3. Step 3: Cross multiply
    281,965.72x = 389,137.30 × 154,665.91
  4. Step 4: Simplify right side
    281,965.72x = 60,186,275,205.62
  5. Step 5: Solve for x
    x = 60,186,275,205.62/281,965.72
  6. Step 6: Final answer
    x = 213,452.46

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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.