Home / 326,999.36-490,494.18-90,336.80

Finding the Fourth Proportional to 326,999.36, 490,494.18 and 90,336.80

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Solution

The fourth proportional to 326,999.36, 490,494.18 and 90,336.80 is: 135,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,999.36 : 490,494.18 = 90,336.80 : x
  2. Step 2: Convert to fraction form
    326,999.36/490,494.18 = 90,336.80/x
  3. Step 3: Cross multiply
    326,999.36x = 490,494.18 × 90,336.80
  4. Step 4: Simplify right side
    326,999.36x = 44,309,674,639.82
  5. Step 5: Solve for x
    x = 44,309,674,639.82/326,999.36
  6. Step 6: Final answer
    x = 135,503.86

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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.