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Finding the Fourth Proportional to 216,190, 298,317.90 and 125,534.80

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Solution

The fourth proportional to 216,190, 298,317.90 and 125,534.80 is: 173,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,190 : 298,317.90 = 125,534.80 : x
  2. Step 2: Convert to fraction form
    216,190/298,317.90 = 125,534.80/x
  3. Step 3: Cross multiply
    216,190x = 298,317.90 × 125,534.80
  4. Step 4: Simplify right side
    216,190x = 37,449,277,912.92
  5. Step 5: Solve for x
    x = 37,449,277,912.92/216,190
  6. Step 6: Final answer
    x = 173,223.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.