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Finding the Fourth Proportional to 399,426.29, 551,212.02 and 227,335.81

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Solution

The fourth proportional to 399,426.29, 551,212.02 and 227,335.81 is: 313,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,426.29 : 551,212.02 = 227,335.81 : x
  2. Step 2: Convert to fraction form
    399,426.29/551,212.02 = 227,335.81/x
  3. Step 3: Cross multiply
    399,426.29x = 551,212.02 × 227,335.81
  4. Step 4: Simplify right side
    399,426.29x = 125,310,231,048.44
  5. Step 5: Solve for x
    x = 125,310,231,048.44/399,426.29
  6. Step 6: Final answer
    x = 313,725.55

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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.