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Finding the Fourth Proportional to 330,517.08, 495,006.64 and 321,425.64

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Solution

The fourth proportional to 330,517.08, 495,006.64 and 321,425.64 is: 481,390.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,517.08 : 495,006.64 = 321,425.64 : x
  2. Step 2: Convert to fraction form
    330,517.08/495,006.64 = 321,425.64/x
  3. Step 3: Cross multiply
    330,517.08x = 495,006.64 × 321,425.64
  4. Step 4: Simplify right side
    330,517.08x = 159,107,826,066.25
  5. Step 5: Solve for x
    x = 159,107,826,066.25/330,517.08
  6. Step 6: Final answer
    x = 481,390.63

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1.5x scale

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.