Home / 326,856.15-490,270.83-90,192.78

Finding the Fourth Proportional to 326,856.15, 490,270.83 and 90,192.78

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Solution

The fourth proportional to 326,856.15, 490,270.83 and 90,192.78 is: 135,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,856.15 : 490,270.83 = 90,192.78 : x
  2. Step 2: Convert to fraction form
    326,856.15/490,270.83 = 90,192.78/x
  3. Step 3: Cross multiply
    326,856.15x = 490,270.83 × 90,192.78
  4. Step 4: Simplify right side
    326,856.15x = 44,218,889,110.61
  5. Step 5: Solve for x
    x = 44,218,889,110.61/326,856.15
  6. Step 6: Final answer
    x = 135,285.47

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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.