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Finding the Fourth Proportional to 397,792.17, 548,953.20 and 216,505.41

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Solution

The fourth proportional to 397,792.17, 548,953.20 and 216,505.41 is: 298,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,792.17 : 548,953.20 = 216,505.41 : x
  2. Step 2: Convert to fraction form
    397,792.17/548,953.20 = 216,505.41/x
  3. Step 3: Cross multiply
    397,792.17x = 548,953.20 × 216,505.41
  4. Step 4: Simplify right side
    397,792.17x = 118,851,337,636.81
  5. Step 5: Solve for x
    x = 118,851,337,636.81/397,792.17
  6. Step 6: Final answer
    x = 298,777.47

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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.