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Finding the Fourth Proportional to 372,845.80, 514,529.70 and 203,078.44

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Solution

The fourth proportional to 372,845.80, 514,529.70 and 203,078.44 is: 280,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,845.80 : 514,529.70 = 203,078.44 : x
  2. Step 2: Convert to fraction form
    372,845.80/514,529.70 = 203,078.44/x
  3. Step 3: Cross multiply
    372,845.80x = 514,529.70 × 203,078.44
  4. Step 4: Simplify right side
    372,845.80x = 104,489,888,809.67
  5. Step 5: Solve for x
    x = 104,489,888,809.67/372,845.80
  6. Step 6: Final answer
    x = 280,249.61

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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.