Home / 281,974.46-389,130.09-154,656.50

Finding the Fourth Proportional to 281,974.46, 389,130.09 and 154,656.50

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Solution

The fourth proportional to 281,974.46, 389,130.09 and 154,656.50 is: 213,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,974.46 : 389,130.09 = 154,656.50 : x
  2. Step 2: Convert to fraction form
    281,974.46/389,130.09 = 154,656.50/x
  3. Step 3: Cross multiply
    281,974.46x = 389,130.09 × 154,656.50
  4. Step 4: Simplify right side
    281,974.46x = 60,181,497,764.09
  5. Step 5: Solve for x
    x = 60,181,497,764.09/281,974.46
  6. Step 6: Final answer
    x = 213,428.90

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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.