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Finding the Fourth Proportional to 351,644.34, 485,912.88 and 255,984.96

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Solution

The fourth proportional to 351,644.34, 485,912.88 and 255,984.96 is: 353,727.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,644.34 : 485,912.88 = 255,984.96 : x
  2. Step 2: Convert to fraction form
    351,644.34/485,912.88 = 255,984.96/x
  3. Step 3: Cross multiply
    351,644.34x = 485,912.88 × 255,984.96
  4. Step 4: Simplify right side
    351,644.34x = 124,386,389,150.29
  5. Step 5: Solve for x
    x = 124,386,389,150.29/351,644.34
  6. Step 6: Final answer
    x = 353,727.83

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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.