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Finding the Fourth Proportional to 392,508.91, 588,881.57 and 122,626.15

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Solution

The fourth proportional to 392,508.91, 588,881.57 and 122,626.15 is: 183,976.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,508.91 : 588,881.57 = 122,626.15 : x
  2. Step 2: Convert to fraction form
    392,508.91/588,881.57 = 122,626.15/x
  3. Step 3: Cross multiply
    392,508.91x = 588,881.57 × 122,626.15
  4. Step 4: Simplify right side
    392,508.91x = 72,212,277,649.72
  5. Step 5: Solve for x
    x = 72,212,277,649.72/392,508.91
  6. Step 6: Final answer
    x = 183,976.15

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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.