Home / 379,609.31-523,840.29-209,832.50

Finding the Fourth Proportional to 379,609.31, 523,840.29 and 209,832.50

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Solution

The fourth proportional to 379,609.31, 523,840.29 and 209,832.50 is: 289,557.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,609.31 : 523,840.29 = 209,832.50 : x
  2. Step 2: Convert to fraction form
    379,609.31/523,840.29 = 209,832.50/x
  3. Step 3: Cross multiply
    379,609.31x = 523,840.29 × 209,832.50
  4. Step 4: Simplify right side
    379,609.31x = 109,918,717,651.43
  5. Step 5: Solve for x
    x = 109,918,717,651.43/379,609.31
  6. Step 6: Final answer
    x = 289,557.49

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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.