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Finding the Fourth Proportional to 392,573.73, 588,538.77 and 139,710.23

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Solution

The fourth proportional to 392,573.73, 588,538.77 and 139,710.23 is: 209,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,573.73 : 588,538.77 = 139,710.23 : x
  2. Step 2: Convert to fraction form
    392,573.73/588,538.77 = 139,710.23/x
  3. Step 3: Cross multiply
    392,573.73x = 588,538.77 × 139,710.23
  4. Step 4: Simplify right side
    392,573.73x = 82,224,886,708.86
  5. Step 5: Solve for x
    x = 82,224,886,708.86/392,573.73
  6. Step 6: Final answer
    x = 209,450.81

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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.