Home / 379,609.56-523,840.64-209,832.75

Finding the Fourth Proportional to 379,609.56, 523,840.64 and 209,832.75

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Solution

The fourth proportional to 379,609.56, 523,840.64 and 209,832.75 is: 289,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,609.56 : 523,840.64 = 209,832.75 : x
  2. Step 2: Convert to fraction form
    379,609.56/523,840.64 = 209,832.75/x
  3. Step 3: Cross multiply
    379,609.56x = 523,840.64 × 209,832.75
  4. Step 4: Simplify right side
    379,609.56x = 109,918,921,003.80
  5. Step 5: Solve for x
    x = 109,918,921,003.80/379,609.56
  6. Step 6: Final answer
    x = 289,557.83

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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.