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Finding the Fourth Proportional to 399,893.91, 551,857.28 and 227,809.35

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Solution

The fourth proportional to 399,893.91, 551,857.28 and 227,809.35 is: 314,379.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,893.91 : 551,857.28 = 227,809.35 : x
  2. Step 2: Convert to fraction form
    399,893.91/551,857.28 = 227,809.35/x
  3. Step 3: Cross multiply
    399,893.91x = 551,857.28 × 227,809.35
  4. Step 4: Simplify right side
    399,893.91x = 125,718,247,110.52
  5. Step 5: Solve for x
    x = 125,718,247,110.52/399,893.91
  6. Step 6: Final answer
    x = 314,379.00

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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.