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Finding the Fourth Proportional to 320,383.31, 479,699.54 and 230,515.84

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Solution

The fourth proportional to 320,383.31, 479,699.54 and 230,515.84 is: 345,143.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,383.31 : 479,699.54 = 230,515.84 : x
  2. Step 2: Convert to fraction form
    320,383.31/479,699.54 = 230,515.84/x
  3. Step 3: Cross multiply
    320,383.31x = 479,699.54 × 230,515.84
  4. Step 4: Simplify right side
    320,383.31x = 110,578,341,346.79
  5. Step 5: Solve for x
    x = 110,578,341,346.79/320,383.31
  6. Step 6: Final answer
    x = 345,143.89

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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.