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Finding the Fourth Proportional to 505,680.87, 758,550.45 and 190,140.51

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Solution

The fourth proportional to 505,680.87, 758,550.45 and 190,140.51 is: 285,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,680.87 : 758,550.45 = 190,140.51 : x
  2. Step 2: Convert to fraction form
    505,680.87/758,550.45 = 190,140.51/x
  3. Step 3: Cross multiply
    505,680.87x = 758,550.45 × 190,140.51
  4. Step 4: Simplify right side
    505,680.87x = 144,231,172,981.32
  5. Step 5: Solve for x
    x = 144,231,172,981.32/505,680.87
  6. Step 6: Final answer
    x = 285,221.73

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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.