Home / 279,824.57-419,818.60-90,280.73

Finding the Fourth Proportional to 279,824.57, 419,818.60 and 90,280.73

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Solution

The fourth proportional to 279,824.57, 419,818.60 and 90,280.73 is: 135,447.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,824.57 : 419,818.60 = 90,280.73 : x
  2. Step 2: Convert to fraction form
    279,824.57/419,818.60 = 90,280.73/x
  3. Step 3: Cross multiply
    279,824.57x = 419,818.60 × 90,280.73
  4. Step 4: Simplify right side
    279,824.57x = 37,901,527,968.67
  5. Step 5: Solve for x
    x = 37,901,527,968.67/279,824.57
  6. Step 6: Final answer
    x = 135,447.46

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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.