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Finding the Fourth Proportional to 326,882.63, 490,352.25 and 90,225.38

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Solution

The fourth proportional to 326,882.63, 490,352.25 and 90,225.38 is: 135,345.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,882.63 : 490,352.25 = 90,225.38 : x
  2. Step 2: Convert to fraction form
    326,882.63/490,352.25 = 90,225.38/x
  3. Step 3: Cross multiply
    326,882.63x = 490,352.25 × 90,225.38
  4. Step 4: Simplify right side
    326,882.63x = 44,242,218,090.11
  5. Step 5: Solve for x
    x = 44,242,218,090.11/326,882.63
  6. Step 6: Final answer
    x = 135,345.88

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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.