Home / 279,825.57-419,820.10-90,281.73

Finding the Fourth Proportional to 279,825.57, 419,820.10 and 90,281.73

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Solution

The fourth proportional to 279,825.57, 419,820.10 and 90,281.73 is: 135,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,825.57 : 419,820.10 = 90,281.73 : x
  2. Step 2: Convert to fraction form
    279,825.57/419,820.10 = 90,281.73/x
  3. Step 3: Cross multiply
    279,825.57x = 419,820.10 × 90,281.73
  4. Step 4: Simplify right side
    279,825.57x = 37,902,084,916.77
  5. Step 5: Solve for x
    x = 37,902,084,916.77/279,825.57
  6. Step 6: Final answer
    x = 135,448.97

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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.