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Finding the Fourth Proportional to 421,994.52, 582,330.60 and 230,971.68

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Solution

The fourth proportional to 421,994.52, 582,330.60 and 230,971.68 is: 318,728.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,994.52 : 582,330.60 = 230,971.68 : x
  2. Step 2: Convert to fraction form
    421,994.52/582,330.60 = 230,971.68/x
  3. Step 3: Cross multiply
    421,994.52x = 582,330.60 × 230,971.68
  4. Step 4: Simplify right side
    421,994.52x = 134,501,876,997.41
  5. Step 5: Solve for x
    x = 134,501,876,997.41/421,994.52
  6. Step 6: Final answer
    x = 318,728.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.