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Finding the Fourth Proportional to 422,473.20, 633,751.20 and 122,956.80

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Solution

The fourth proportional to 422,473.20, 633,751.20 and 122,956.80 is: 184,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,473.20 : 633,751.20 = 122,956.80 : x
  2. Step 2: Convert to fraction form
    422,473.20/633,751.20 = 122,956.80/x
  3. Step 3: Cross multiply
    422,473.20x = 633,751.20 × 122,956.80
  4. Step 4: Simplify right side
    422,473.20x = 77,924,019,548.16
  5. Step 5: Solve for x
    x = 77,924,019,548.16/422,473.20
  6. Step 6: Final answer
    x = 184,447.25

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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.