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Finding the Fourth Proportional to 343,879.92, 515,836.28 and 144,206.82

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Solution

The fourth proportional to 343,879.92, 515,836.28 and 144,206.82 is: 216,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,879.92 : 515,836.28 = 144,206.82 : x
  2. Step 2: Convert to fraction form
    343,879.92/515,836.28 = 144,206.82/x
  3. Step 3: Cross multiply
    343,879.92x = 515,836.28 × 144,206.82
  4. Step 4: Simplify right side
    343,879.92x = 74,387,109,579.43
  5. Step 5: Solve for x
    x = 74,387,109,579.43/343,879.92
  6. Step 6: Final answer
    x = 216,317.11

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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.