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Finding the Fourth Proportional to 352,149.20, 528,223.80 and 321,736.40

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Solution

The fourth proportional to 352,149.20, 528,223.80 and 321,736.40 is: 482,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,149.20 : 528,223.80 = 321,736.40 : x
  2. Step 2: Convert to fraction form
    352,149.20/528,223.80 = 321,736.40/x
  3. Step 3: Cross multiply
    352,149.20x = 528,223.80 × 321,736.40
  4. Step 4: Simplify right side
    352,149.20x = 169,948,823,806.32
  5. Step 5: Solve for x
    x = 169,948,823,806.32/352,149.20
  6. Step 6: Final answer
    x = 482,604.60

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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.