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Finding the Fourth Proportional to 354,976.40, 532,464.60 and 327,942.80

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Solution

The fourth proportional to 354,976.40, 532,464.60 and 327,942.80 is: 491,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,976.40 : 532,464.60 = 327,942.80 : x
  2. Step 2: Convert to fraction form
    354,976.40/532,464.60 = 327,942.80/x
  3. Step 3: Cross multiply
    354,976.40x = 532,464.60 × 327,942.80
  4. Step 4: Simplify right side
    354,976.40x = 174,617,931,824.88
  5. Step 5: Solve for x
    x = 174,617,931,824.88/354,976.40
  6. Step 6: Final answer
    x = 491,914.20

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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.