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Finding the Fourth Proportional to 399,755.72, 551,760.86 and 227,775.08

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Solution

The fourth proportional to 399,755.72, 551,760.86 and 227,775.08 is: 314,385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,755.72 : 551,760.86 = 227,775.08 : x
  2. Step 2: Convert to fraction form
    399,755.72/551,760.86 = 227,775.08/x
  3. Step 3: Cross multiply
    399,755.72x = 551,760.86 × 227,775.08
  4. Step 4: Simplify right side
    399,755.72x = 125,677,374,027.37
  5. Step 5: Solve for x
    x = 125,677,374,027.37/399,755.72
  6. Step 6: Final answer
    x = 314,385.43

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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.