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Finding the Fourth Proportional to 398,812.01, 550,367.13 and 217,523.94

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Solution

The fourth proportional to 398,812.01, 550,367.13 and 217,523.94 is: 300,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,812.01 : 550,367.13 = 217,523.94 : x
  2. Step 2: Convert to fraction form
    398,812.01/550,367.13 = 217,523.94/x
  3. Step 3: Cross multiply
    398,812.01x = 550,367.13 × 217,523.94
  4. Step 4: Simplify right side
    398,812.01x = 119,718,026,564.09
  5. Step 5: Solve for x
    x = 119,718,026,564.09/398,812.01
  6. Step 6: Final answer
    x = 300,186.62

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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.