Home / 281,107.20-421,732.80-162,566.40

Finding the Fourth Proportional to 281,107.20, 421,732.80 and 162,566.40

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Solution

The fourth proportional to 281,107.20, 421,732.80 and 162,566.40 is: 243,891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,107.20 : 421,732.80 = 162,566.40 : x
  2. Step 2: Convert to fraction form
    281,107.20/421,732.80 = 162,566.40/x
  3. Step 3: Cross multiply
    281,107.20x = 421,732.80 × 162,566.40
  4. Step 4: Simplify right side
    281,107.20x = 68,559,583,057.92
  5. Step 5: Solve for x
    x = 68,559,583,057.92/281,107.20
  6. Step 6: Final answer
    x = 243,891.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.