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Finding the Fourth Proportional to 250,495.07, 375,662.41 and 81,969.71

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Solution

The fourth proportional to 250,495.07, 375,662.41 and 81,969.71 is: 122,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,495.07 : 375,662.41 = 81,969.71 : x
  2. Step 2: Convert to fraction form
    250,495.07/375,662.41 = 81,969.71/x
  3. Step 3: Cross multiply
    250,495.07x = 375,662.41 × 81,969.71
  4. Step 4: Simplify right side
    250,495.07x = 30,792,936,722.36
  5. Step 5: Solve for x
    x = 30,792,936,722.36/250,495.07
  6. Step 6: Final answer
    x = 122,928.32

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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.