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Finding the Fourth Proportional to 352,170.40, 528,644.40 and 219,200.80

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Solution

The fourth proportional to 352,170.40, 528,644.40 and 219,200.80 is: 329,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,170.40 : 528,644.40 = 219,200.80 : x
  2. Step 2: Convert to fraction form
    352,170.40/528,644.40 = 219,200.80/x
  3. Step 3: Cross multiply
    352,170.40x = 528,644.40 × 219,200.80
  4. Step 4: Simplify right side
    352,170.40x = 115,879,275,395.52
  5. Step 5: Solve for x
    x = 115,879,275,395.52/352,170.40
  6. Step 6: Final answer
    x = 329,043.20

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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.