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Finding the Fourth Proportional to 292,231.20, 438,519.60 and 192,679.20

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Solution

The fourth proportional to 292,231.20, 438,519.60 and 192,679.20 is: 289,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,231.20 : 438,519.60 = 192,679.20 : x
  2. Step 2: Convert to fraction form
    292,231.20/438,519.60 = 192,679.20/x
  3. Step 3: Cross multiply
    292,231.20x = 438,519.60 × 192,679.20
  4. Step 4: Simplify right side
    292,231.20x = 84,493,605,712.32
  5. Step 5: Solve for x
    x = 84,493,605,712.32/292,231.20
  6. Step 6: Final answer
    x = 289,132.73

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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.