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Finding the Fourth Proportional to 216,612.72, 324,845.10 and 109,955.70

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Solution

The fourth proportional to 216,612.72, 324,845.10 and 109,955.70 is: 164,896.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,612.72 : 324,845.10 = 109,955.70 : x
  2. Step 2: Convert to fraction form
    216,612.72/324,845.10 = 109,955.70/x
  3. Step 3: Cross multiply
    216,612.72x = 324,845.10 × 109,955.70
  4. Step 4: Simplify right side
    216,612.72x = 35,718,570,362.07
  5. Step 5: Solve for x
    x = 35,718,570,362.07/216,612.72
  6. Step 6: Final answer
    x = 164,896.00

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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.