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Finding the Fourth Proportional to 218,552.52, 301,571.10 and 121,755.72

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Solution

The fourth proportional to 218,552.52, 301,571.10 and 121,755.72 is: 168,005.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,552.52 : 301,571.10 = 121,755.72 : x
  2. Step 2: Convert to fraction form
    218,552.52/301,571.10 = 121,755.72/x
  3. Step 3: Cross multiply
    218,552.52x = 301,571.10 × 121,755.72
  4. Step 4: Simplify right side
    218,552.52x = 36,718,006,411.69
  5. Step 5: Solve for x
    x = 36,718,006,411.69/218,552.52
  6. Step 6: Final answer
    x = 168,005.41

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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.