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Finding the Fourth Proportional to 326,999.99, 490,495.11 and 90,337.43

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Solution

The fourth proportional to 326,999.99, 490,495.11 and 90,337.43 is: 135,504.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,999.99 : 490,495.11 = 90,337.43 : x
  2. Step 2: Convert to fraction form
    326,999.99/490,495.11 = 90,337.43/x
  3. Step 3: Cross multiply
    326,999.99x = 490,495.11 × 90,337.43
  4. Step 4: Simplify right side
    326,999.99x = 44,310,065,212.49
  5. Step 5: Solve for x
    x = 44,310,065,212.49/326,999.99
  6. Step 6: Final answer
    x = 135,504.79

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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.