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Finding the Fourth Proportional to 339,878.25, 508,833.23 and 255,991.77

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Solution

The fourth proportional to 339,878.25, 508,833.23 and 255,991.77 is: 383,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,878.25 : 508,833.23 = 255,991.77 : x
  2. Step 2: Convert to fraction form
    339,878.25/508,833.23 = 255,991.77/x
  3. Step 3: Cross multiply
    339,878.25x = 508,833.23 × 255,991.77
  4. Step 4: Simplify right side
    339,878.25x = 130,257,117,551.43
  5. Step 5: Solve for x
    x = 130,257,117,551.43/339,878.25
  6. Step 6: Final answer
    x = 383,246.40

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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.