Home / 415,314.12-622,533.78-215,422.32

Finding the Fourth Proportional to 415,314.12, 622,533.78 and 215,422.32

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Solution

The fourth proportional to 415,314.12, 622,533.78 and 215,422.32 is: 322,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,314.12 : 622,533.78 = 215,422.32 : x
  2. Step 2: Convert to fraction form
    415,314.12/622,533.78 = 215,422.32/x
  3. Step 3: Cross multiply
    415,314.12x = 622,533.78 × 215,422.32
  4. Step 4: Simplify right side
    415,314.12x = 134,107,671,165.97
  5. Step 5: Solve for x
    x = 134,107,671,165.97/415,314.12
  6. Step 6: Final answer
    x = 322,906.60

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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.