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Finding the Fourth Proportional to 395,776.79, 545,873.14 and 248,644.43

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Solution

The fourth proportional to 395,776.79, 545,873.14 and 248,644.43 is: 342,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,776.79 : 545,873.14 = 248,644.43 : x
  2. Step 2: Convert to fraction form
    395,776.79/545,873.14 = 248,644.43/x
  3. Step 3: Cross multiply
    395,776.79x = 545,873.14 × 248,644.43
  4. Step 4: Simplify right side
    395,776.79x = 135,728,318,446.61
  5. Step 5: Solve for x
    x = 135,728,318,446.61/395,776.79
  6. Step 6: Final answer
    x = 342,941.58

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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.