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Finding the Fourth Proportional to 144,379.70, 216,600.45 and 43,185.69

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Solution

The fourth proportional to 144,379.70, 216,600.45 and 43,185.69 is: 64,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,379.70 : 216,600.45 = 43,185.69 : x
  2. Step 2: Convert to fraction form
    144,379.70/216,600.45 = 43,185.69/x
  3. Step 3: Cross multiply
    144,379.70x = 216,600.45 × 43,185.69
  4. Step 4: Simplify right side
    144,379.70x = 9,354,039,887.56
  5. Step 5: Solve for x
    x = 9,354,039,887.56/144,379.70
  6. Step 6: Final answer
    x = 64,787.78

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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.