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Finding the Fourth Proportional to 397,795.52, 548,950.15 and 216,511.45

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Solution

The fourth proportional to 397,795.52, 548,950.15 and 216,511.45 is: 298,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,795.52 : 548,950.15 = 216,511.45 : x
  2. Step 2: Convert to fraction form
    397,795.52/548,950.15 = 216,511.45/x
  3. Step 3: Cross multiply
    397,795.52x = 548,950.15 × 216,511.45
  4. Step 4: Simplify right side
    397,795.52x = 118,853,989,126.91
  5. Step 5: Solve for x
    x = 118,853,989,126.91/397,795.52
  6. Step 6: Final answer
    x = 298,781.62

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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.