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Finding the Fourth Proportional to 422,287.06, 633,492.42 and 122,728.72

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Solution

The fourth proportional to 422,287.06, 633,492.42 and 122,728.72 is: 184,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,287.06 : 633,492.42 = 122,728.72 : x
  2. Step 2: Convert to fraction form
    422,287.06/633,492.42 = 122,728.72/x
  3. Step 3: Cross multiply
    422,287.06x = 633,492.42 × 122,728.72
  4. Step 4: Simplify right side
    422,287.06x = 77,747,713,836.30
  5. Step 5: Solve for x
    x = 77,747,713,836.30/422,287.06
  6. Step 6: Final answer
    x = 184,111.05

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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.