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Finding the Fourth Proportional to 326,950.28, 490,431.59 and 90,299.26

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Solution

The fourth proportional to 326,950.28, 490,431.59 and 90,299.26 is: 135,450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,950.28 : 490,431.59 = 90,299.26 : x
  2. Step 2: Convert to fraction form
    326,950.28/490,431.59 = 90,299.26/x
  3. Step 3: Cross multiply
    326,950.28x = 490,431.59 × 90,299.26
  4. Step 4: Simplify right side
    326,950.28x = 44,285,609,657.62
  5. Step 5: Solve for x
    x = 44,285,609,657.62/326,950.28
  6. Step 6: Final answer
    x = 135,450.59

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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.