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Finding the Fourth Proportional to 392,976.78, 588,971.88 and 168,072.72

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Solution

The fourth proportional to 392,976.78, 588,971.88 and 168,072.72 is: 251,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,976.78 : 588,971.88 = 168,072.72 : x
  2. Step 2: Convert to fraction form
    392,976.78/588,971.88 = 168,072.72/x
  3. Step 3: Cross multiply
    392,976.78x = 588,971.88 × 168,072.72
  4. Step 4: Simplify right side
    392,976.78x = 98,990,105,875.11
  5. Step 5: Solve for x
    x = 98,990,105,875.11/392,976.78
  6. Step 6: Final answer
    x = 251,898.10

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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.