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Finding the Fourth Proportional to 216,550, 298,867.80 and 127,126

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Solution

The fourth proportional to 216,550, 298,867.80 and 127,126 is: 175,450.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,550 : 298,867.80 = 127,126 : x
  2. Step 2: Convert to fraction form
    216,550/298,867.80 = 127,126/x
  3. Step 3: Cross multiply
    216,550x = 298,867.80 × 127,126
  4. Step 4: Simplify right side
    216,550x = 37,993,867,942.80
  5. Step 5: Solve for x
    x = 37,993,867,942.80/216,550
  6. Step 6: Final answer
    x = 175,450.79

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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.