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Finding the Fourth Proportional to 392,987.79, 588,988.66 and 168,084.27

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Solution

The fourth proportional to 392,987.79, 588,988.66 and 168,084.27 is: 251,915.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,987.79 : 588,988.66 = 168,084.27 : x
  2. Step 2: Convert to fraction form
    392,987.79/588,988.66 = 168,084.27/x
  3. Step 3: Cross multiply
    392,987.79x = 588,988.66 × 168,084.27
  4. Step 4: Simplify right side
    392,987.79x = 98,999,728,954.38
  5. Step 5: Solve for x
    x = 98,999,728,954.38/392,987.79
  6. Step 6: Final answer
    x = 251,915.53

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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.