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Finding the Fourth Proportional to 326,668.55, 490,005.32 and 90,024.21

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Solution

The fourth proportional to 326,668.55, 490,005.32 and 90,024.21 is: 135,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,668.55 : 490,005.32 = 90,024.21 : x
  2. Step 2: Convert to fraction form
    326,668.55/490,005.32 = 90,024.21/x
  3. Step 3: Cross multiply
    326,668.55x = 490,005.32 × 90,024.21
  4. Step 4: Simplify right side
    326,668.55x = 44,112,341,378.68
  5. Step 5: Solve for x
    x = 44,112,341,378.68/326,668.55
  6. Step 6: Final answer
    x = 135,037.00

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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.