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Finding the Fourth Proportional to 326,315.06, 450,456.10 and 305,887.94

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Solution

The fourth proportional to 326,315.06, 450,456.10 and 305,887.94 is: 422,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,315.06 : 450,456.10 = 305,887.94 : x
  2. Step 2: Convert to fraction form
    326,315.06/450,456.10 = 305,887.94/x
  3. Step 3: Cross multiply
    326,315.06x = 450,456.10 × 305,887.94
  4. Step 4: Simplify right side
    326,315.06x = 137,789,088,489.43
  5. Step 5: Solve for x
    x = 137,789,088,489.43/326,315.06
  6. Step 6: Final answer
    x = 422,257.83

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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.