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Finding the Fourth Proportional to 144,879.84, 217,339.44 and 45,021.36

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Solution

The fourth proportional to 144,879.84, 217,339.44 and 45,021.36 is: 67,538.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,879.84 : 217,339.44 = 45,021.36 : x
  2. Step 2: Convert to fraction form
    144,879.84/217,339.44 = 45,021.36/x
  3. Step 3: Cross multiply
    144,879.84x = 217,339.44 × 45,021.36
  4. Step 4: Simplify right side
    144,879.84x = 9,784,917,170.44
  5. Step 5: Solve for x
    x = 9,784,917,170.44/144,879.84
  6. Step 6: Final answer
    x = 67,538.16

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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.