Home / 379,629.25-523,842.89-209,840.29

Finding the Fourth Proportional to 379,629.25, 523,842.89 and 209,840.29

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Solution

The fourth proportional to 379,629.25, 523,842.89 and 209,840.29 is: 289,554.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,629.25 : 523,842.89 = 209,840.29 : x
  2. Step 2: Convert to fraction form
    379,629.25/523,842.89 = 209,840.29/x
  3. Step 3: Cross multiply
    379,629.25x = 523,842.89 × 209,840.29
  4. Step 4: Simplify right side
    379,629.25x = 109,923,342,902.84
  5. Step 5: Solve for x
    x = 109,923,342,902.84/379,629.25
  6. Step 6: Final answer
    x = 289,554.46

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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.