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Finding the Fourth Proportional to 326,898.24, 490,310.64 and 90,274.56

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Solution

The fourth proportional to 326,898.24, 490,310.64 and 90,274.56 is: 135,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,898.24 : 490,310.64 = 90,274.56 : x
  2. Step 2: Convert to fraction form
    326,898.24/490,310.64 = 90,274.56/x
  3. Step 3: Cross multiply
    326,898.24x = 490,310.64 × 90,274.56
  4. Step 4: Simplify right side
    326,898.24x = 44,262,577,289.32
  5. Step 5: Solve for x
    x = 44,262,577,289.32/326,898.24
  6. Step 6: Final answer
    x = 135,401.70

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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.