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Finding the Fourth Proportional to 326,818.80, 451,218.96 and 218,078.64

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Solution

The fourth proportional to 326,818.80, 451,218.96 and 218,078.64 is: 301,087.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,818.80 : 451,218.96 = 218,078.64 : x
  2. Step 2: Convert to fraction form
    326,818.80/451,218.96 = 218,078.64/x
  3. Step 3: Cross multiply
    326,818.80x = 451,218.96 × 218,078.64
  4. Step 4: Simplify right side
    326,818.80x = 98,401,217,139.01
  5. Step 5: Solve for x
    x = 98,401,217,139.01/326,818.80
  6. Step 6: Final answer
    x = 301,087.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.