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Finding the Fourth Proportional to 397,316.38, 548,292.74 and 216,028.31

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Solution

The fourth proportional to 397,316.38, 548,292.74 and 216,028.31 is: 298,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,316.38 : 548,292.74 = 216,028.31 : x
  2. Step 2: Convert to fraction form
    397,316.38/548,292.74 = 216,028.31/x
  3. Step 3: Cross multiply
    397,316.38x = 548,292.74 × 216,028.31
  4. Step 4: Simplify right side
    397,316.38x = 118,446,754,007.47
  5. Step 5: Solve for x
    x = 118,446,754,007.47/397,316.38
  6. Step 6: Final answer
    x = 298,116.97

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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.