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Finding the Fourth Proportional to 328,171.20, 491,479.20 and 222,417.60

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Solution

The fourth proportional to 328,171.20, 491,479.20 and 222,417.60 is: 333,099.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,171.20 : 491,479.20 = 222,417.60 : x
  2. Step 2: Convert to fraction form
    328,171.20/491,479.20 = 222,417.60/x
  3. Step 3: Cross multiply
    328,171.20x = 491,479.20 × 222,417.60
  4. Step 4: Simplify right side
    328,171.20x = 109,313,624,113.92
  5. Step 5: Solve for x
    x = 109,313,624,113.92/328,171.20
  6. Step 6: Final answer
    x = 333,099.38

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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.