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Finding the Fourth Proportional to 505,288.87, 757,769.11 and 168,238.76

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Solution

The fourth proportional to 505,288.87, 757,769.11 and 168,238.76 is: 252,303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,288.87 : 757,769.11 = 168,238.76 : x
  2. Step 2: Convert to fraction form
    505,288.87/757,769.11 = 168,238.76/x
  3. Step 3: Cross multiply
    505,288.87x = 757,769.11 × 168,238.76
  4. Step 4: Simplify right side
    505,288.87x = 127,486,131,223.26
  5. Step 5: Solve for x
    x = 127,486,131,223.26/505,288.87
  6. Step 6: Final answer
    x = 252,303.46

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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.