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Finding the Fourth Proportional to 261,571.68, 361,136.88 and 161,028

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Solution

The fourth proportional to 261,571.68, 361,136.88 and 161,028 is: 222,322.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,571.68 : 361,136.88 = 161,028 : x
  2. Step 2: Convert to fraction form
    261,571.68/361,136.88 = 161,028/x
  3. Step 3: Cross multiply
    261,571.68x = 361,136.88 × 161,028
  4. Step 4: Simplify right side
    261,571.68x = 58,153,149,512.64
  5. Step 5: Solve for x
    x = 58,153,149,512.64/261,571.68
  6. Step 6: Final answer
    x = 222,322.04

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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.