Home / 281,982.76-389,142.26-154,658.04

Finding the Fourth Proportional to 281,982.76, 389,142.26 and 154,658.04

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Solution

The fourth proportional to 281,982.76, 389,142.26 and 154,658.04 is: 213,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,982.76 : 389,142.26 = 154,658.04 : x
  2. Step 2: Convert to fraction form
    281,982.76/389,142.26 = 154,658.04/x
  3. Step 3: Cross multiply
    281,982.76x = 389,142.26 × 154,658.04
  4. Step 4: Simplify right side
    281,982.76x = 60,183,979,212.77
  5. Step 5: Solve for x
    x = 60,183,979,212.77/281,982.76
  6. Step 6: Final answer
    x = 213,431.41

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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.