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Finding the Fourth Proportional to 281,010.15, 421,515.23 and 162,912.15

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Solution

The fourth proportional to 281,010.15, 421,515.23 and 162,912.15 is: 244,368.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,010.15 : 421,515.23 = 162,912.15 : x
  2. Step 2: Convert to fraction form
    281,010.15/421,515.23 = 162,912.15/x
  3. Step 3: Cross multiply
    281,010.15x = 421,515.23 × 162,912.15
  4. Step 4: Simplify right side
    281,010.15x = 68,669,951,562.48
  5. Step 5: Solve for x
    x = 68,669,951,562.48/281,010.15
  6. Step 6: Final answer
    x = 244,368.23

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1.5x scale

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.