Home / 281,977.08-389,133.36-154,651.56

Finding the Fourth Proportional to 281,977.08, 389,133.36 and 154,651.56

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Solution

The fourth proportional to 281,977.08, 389,133.36 and 154,651.56 is: 213,421.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,977.08 : 389,133.36 = 154,651.56 : x
  2. Step 2: Convert to fraction form
    281,977.08/389,133.36 = 154,651.56/x
  3. Step 3: Cross multiply
    281,977.08x = 389,133.36 × 154,651.56
  4. Step 4: Simplify right side
    281,977.08x = 60,180,081,172.04
  5. Step 5: Solve for x
    x = 60,180,081,172.04/281,977.08
  6. Step 6: Final answer
    x = 213,421.89

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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.