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Finding the Fourth Proportional to 272,571.71, 408,828.81 and 72,912.25

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Solution

The fourth proportional to 272,571.71, 408,828.81 and 72,912.25 is: 109,360.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,571.71 : 408,828.81 = 72,912.25 : x
  2. Step 2: Convert to fraction form
    272,571.71/408,828.81 = 72,912.25/x
  3. Step 3: Cross multiply
    272,571.71x = 408,828.81 × 72,912.25
  4. Step 4: Simplify right side
    272,571.71x = 29,808,628,037.36
  5. Step 5: Solve for x
    x = 29,808,628,037.36/272,571.71
  6. Step 6: Final answer
    x = 109,360.68

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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.