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Finding the Fourth Proportional to 392,578.90, 588,871.30 and 214,989.04

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Solution

The fourth proportional to 392,578.90, 588,871.30 and 214,989.04 is: 322,485.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,578.90 : 588,871.30 = 214,989.04 : x
  2. Step 2: Convert to fraction form
    392,578.90/588,871.30 = 214,989.04/x
  3. Step 3: Cross multiply
    392,578.90x = 588,871.30 × 214,989.04
  4. Step 4: Simplify right side
    392,578.90x = 126,600,872,759.87
  5. Step 5: Solve for x
    x = 126,600,872,759.87/392,578.90
  6. Step 6: Final answer
    x = 322,485.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.