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Finding the Fourth Proportional to 415,081.60, 622,816.80 and 215,627.20

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Solution

The fourth proportional to 415,081.60, 622,816.80 and 215,627.20 is: 323,541.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,081.60 : 622,816.80 = 215,627.20 : x
  2. Step 2: Convert to fraction form
    415,081.60/622,816.80 = 215,627.20/x
  3. Step 3: Cross multiply
    415,081.60x = 622,816.80 × 215,627.20
  4. Step 4: Simplify right side
    415,081.60x = 134,296,242,696.96
  5. Step 5: Solve for x
    x = 134,296,242,696.96/415,081.60
  6. Step 6: Final answer
    x = 323,541.79

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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.