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Finding the Fourth Proportional to 422,215.35, 633,364.61 and 122,698.55

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Solution

The fourth proportional to 422,215.35, 633,364.61 and 122,698.55 is: 184,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,215.35 : 633,364.61 = 122,698.55 : x
  2. Step 2: Convert to fraction form
    422,215.35/633,364.61 = 122,698.55/x
  3. Step 3: Cross multiply
    422,215.35x = 633,364.61 × 122,698.55
  4. Step 4: Simplify right side
    422,215.35x = 77,712,915,488.00
  5. Step 5: Solve for x
    x = 77,712,915,488.00/422,215.35
  6. Step 6: Final answer
    x = 184,059.90

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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.