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Finding the Fourth Proportional to 309,027.08, 426,422.12 and 173,042.12

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Solution

The fourth proportional to 309,027.08, 426,422.12 and 173,042.12 is: 238,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,027.08 : 426,422.12 = 173,042.12 : x
  2. Step 2: Convert to fraction form
    309,027.08/426,422.12 = 173,042.12/x
  3. Step 3: Cross multiply
    309,027.08x = 426,422.12 × 173,042.12
  4. Step 4: Simplify right side
    309,027.08x = 73,788,987,659.69
  5. Step 5: Solve for x
    x = 73,788,987,659.69/309,027.08
  6. Step 6: Final answer
    x = 238,778.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.