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Finding the Fourth Proportional to 421,016.56, 580,996.08 and 230,025.86

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Solution

The fourth proportional to 421,016.56, 580,996.08 and 230,025.86 is: 317,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,016.56 : 580,996.08 = 230,025.86 : x
  2. Step 2: Convert to fraction form
    421,016.56/580,996.08 = 230,025.86/x
  3. Step 3: Cross multiply
    421,016.56x = 580,996.08 × 230,025.86
  4. Step 4: Simplify right side
    421,016.56x = 133,644,122,958.63
  5. Step 5: Solve for x
    x = 133,644,122,958.63/421,016.56
  6. Step 6: Final answer
    x = 317,431.99

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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.