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Finding the Fourth Proportional to 440,198.70, 660,298.05 and 328,224.30

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Solution

The fourth proportional to 440,198.70, 660,298.05 and 328,224.30 is: 492,336.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,198.70 : 660,298.05 = 328,224.30 : x
  2. Step 2: Convert to fraction form
    440,198.70/660,298.05 = 328,224.30/x
  3. Step 3: Cross multiply
    440,198.70x = 660,298.05 × 328,224.30
  4. Step 4: Simplify right side
    440,198.70x = 216,725,865,252.62
  5. Step 5: Solve for x
    x = 216,725,865,252.62/440,198.70
  6. Step 6: Final answer
    x = 492,336.45

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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.