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Finding the Fourth Proportional to 339,778.51, 508,987.31 and 204,767.40

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Solution

The fourth proportional to 339,778.51, 508,987.31 and 204,767.40 is: 306,741.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,778.51 : 508,987.31 = 204,767.40 : x
  2. Step 2: Convert to fraction form
    339,778.51/508,987.31 = 204,767.40/x
  3. Step 3: Cross multiply
    339,778.51x = 508,987.31 × 204,767.40
  4. Step 4: Simplify right side
    339,778.51x = 104,224,008,986.56
  5. Step 5: Solve for x
    x = 104,224,008,986.56/339,778.51
  6. Step 6: Final answer
    x = 306,741.03

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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.