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Finding the Fourth Proportional to 352,879.20, 527,860.80 and 321,736.32

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Solution

The fourth proportional to 352,879.20, 527,860.80 and 321,736.32 is: 481,275.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,879.20 : 527,860.80 = 321,736.32 : x
  2. Step 2: Convert to fraction form
    352,879.20/527,860.80 = 321,736.32/x
  3. Step 3: Cross multiply
    352,879.20x = 527,860.80 × 321,736.32
  4. Step 4: Simplify right side
    352,879.20x = 169,831,991,264.26
  5. Step 5: Solve for x
    x = 169,831,991,264.26/352,879.20
  6. Step 6: Final answer
    x = 481,275.15

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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.