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Finding the Fourth Proportional to 339,997.90, 508,830.45 and 312,004.30

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Solution

The fourth proportional to 339,997.90, 508,830.45 and 312,004.30 is: 466,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,997.90 : 508,830.45 = 312,004.30 : x
  2. Step 2: Convert to fraction form
    339,997.90/508,830.45 = 312,004.30/x
  3. Step 3: Cross multiply
    339,997.90x = 508,830.45 × 312,004.30
  4. Step 4: Simplify right side
    339,997.90x = 158,757,288,370.94
  5. Step 5: Solve for x
    x = 158,757,288,370.94/339,997.90
  6. Step 6: Final answer
    x = 466,936.09

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1.5x scale

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.