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Finding the Fourth Proportional to 287,593.20, 431,454.60 and 169,203.60

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Solution

The fourth proportional to 287,593.20, 431,454.60 and 169,203.60 is: 253,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,593.20 : 431,454.60 = 169,203.60 : x
  2. Step 2: Convert to fraction form
    287,593.20/431,454.60 = 169,203.60/x
  3. Step 3: Cross multiply
    287,593.20x = 431,454.60 × 169,203.60
  4. Step 4: Simplify right side
    287,593.20x = 73,003,671,556.56
  5. Step 5: Solve for x
    x = 73,003,671,556.56/287,593.20
  6. Step 6: Final answer
    x = 253,843.52

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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.