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Finding the Fourth Proportional to 210,954.37, 316,450.78 and 68,763.15

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Solution

The fourth proportional to 210,954.37, 316,450.78 and 68,763.15 is: 103,150.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,954.37 : 316,450.78 = 68,763.15 : x
  2. Step 2: Convert to fraction form
    210,954.37/316,450.78 = 68,763.15/x
  3. Step 3: Cross multiply
    210,954.37x = 316,450.78 × 68,763.15
  4. Step 4: Simplify right side
    210,954.37x = 21,760,150,526.69
  5. Step 5: Solve for x
    x = 21,760,150,526.69/210,954.37
  6. Step 6: Final answer
    x = 103,150.98

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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.