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Finding the Fourth Proportional to 415,455.87, 622,962.38 and 215,575.01

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Solution

The fourth proportional to 415,455.87, 622,962.38 and 215,575.01 is: 323,247.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,455.87 : 622,962.38 = 215,575.01 : x
  2. Step 2: Convert to fraction form
    415,455.87/622,962.38 = 215,575.01/x
  3. Step 3: Cross multiply
    415,455.87x = 622,962.38 × 215,575.01
  4. Step 4: Simplify right side
    415,455.87x = 134,295,119,845.75
  5. Step 5: Solve for x
    x = 134,295,119,845.75/415,455.87
  6. Step 6: Final answer
    x = 323,247.61

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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.