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Finding the Fourth Proportional to 355,306.31, 490,372.71 and 226,203.54

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Solution

The fourth proportional to 355,306.31, 490,372.71 and 226,203.54 is: 312,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,306.31 : 490,372.71 = 226,203.54 : x
  2. Step 2: Convert to fraction form
    355,306.31/490,372.71 = 226,203.54/x
  3. Step 3: Cross multiply
    355,306.31x = 490,372.71 × 226,203.54
  4. Step 4: Simplify right side
    355,306.31x = 110,924,042,921.39
  5. Step 5: Solve for x
    x = 110,924,042,921.39/355,306.31
  6. Step 6: Final answer
    x = 312,192.72

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1.5x scale

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.