Home / 326,979.50-490,468.59-90,321.48

Finding the Fourth Proportional to 326,979.50, 490,468.59 and 90,321.48

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Solution

The fourth proportional to 326,979.50, 490,468.59 and 90,321.48 is: 135,482.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,979.50 : 490,468.59 = 90,321.48 : x
  2. Step 2: Convert to fraction form
    326,979.50/490,468.59 = 90,321.48/x
  3. Step 3: Cross multiply
    326,979.50x = 490,468.59 × 90,321.48
  4. Step 4: Simplify right side
    326,979.50x = 44,299,848,942.31
  5. Step 5: Solve for x
    x = 44,299,848,942.31/326,979.50
  6. Step 6: Final answer
    x = 135,482.04

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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.