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Finding the Fourth Proportional to 505,757.75, 758,749.61 and 190,217.39

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Solution

The fourth proportional to 505,757.75, 758,749.61 and 190,217.39 is: 285,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,757.75 : 758,749.61 = 190,217.39 : x
  2. Step 2: Convert to fraction form
    505,757.75/758,749.61 = 190,217.39/x
  3. Step 3: Cross multiply
    505,757.75x = 758,749.61 × 190,217.39
  4. Step 4: Simplify right side
    505,757.75x = 144,327,367,159.51
  5. Step 5: Solve for x
    x = 144,327,367,159.51/505,757.75
  6. Step 6: Final answer
    x = 285,368.58

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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.