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Finding the Fourth Proportional to 326,028.96, 450,000 and 198,774.72

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Solution

The fourth proportional to 326,028.96, 450,000 and 198,774.72 is: 274,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,028.96 : 450,000 = 198,774.72 : x
  2. Step 2: Convert to fraction form
    326,028.96/450,000 = 198,774.72/x
  3. Step 3: Cross multiply
    326,028.96x = 450,000 × 198,774.72
  4. Step 4: Simplify right side
    326,028.96x = 89,448,624,000
  5. Step 5: Solve for x
    x = 89,448,624,000/326,028.96
  6. Step 6: Final answer
    x = 274,357.91

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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.