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Finding the Fourth Proportional to 392,387, 588,586.06 and 111,904.26

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Solution

The fourth proportional to 392,387, 588,586.06 and 111,904.26 is: 167,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,387 : 588,586.06 = 111,904.26 : x
  2. Step 2: Convert to fraction form
    392,387/588,586.06 = 111,904.26/x
  3. Step 3: Cross multiply
    392,387x = 588,586.06 × 111,904.26
  4. Step 4: Simplify right side
    392,387x = 65,865,287,490.62
  5. Step 5: Solve for x
    x = 65,865,287,490.62/392,387
  6. Step 6: Final answer
    x = 167,857.98

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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.