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Finding the Fourth Proportional to 399,776.64, 551,690.83 and 227,694.57

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Solution

The fourth proportional to 399,776.64, 551,690.83 and 227,694.57 is: 314,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,776.64 : 551,690.83 = 227,694.57 : x
  2. Step 2: Convert to fraction form
    399,776.64/551,690.83 = 227,694.57/x
  3. Step 3: Cross multiply
    399,776.64x = 551,690.83 × 227,694.57
  4. Step 4: Simplify right side
    399,776.64x = 125,617,006,309.79
  5. Step 5: Solve for x
    x = 125,617,006,309.79/399,776.64
  6. Step 6: Final answer
    x = 314,217.98

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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.