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Finding the Fourth Proportional to 422,318.15, 582,810.89 and 256,745.85

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Solution

The fourth proportional to 422,318.15, 582,810.89 and 256,745.85 is: 354,316.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,318.15 : 582,810.89 = 256,745.85 : x
  2. Step 2: Convert to fraction form
    422,318.15/582,810.89 = 256,745.85/x
  3. Step 3: Cross multiply
    422,318.15x = 582,810.89 × 256,745.85
  4. Step 4: Simplify right side
    422,318.15x = 149,634,276,058.58
  5. Step 5: Solve for x
    x = 149,634,276,058.58/422,318.15
  6. Step 6: Final answer
    x = 354,316.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.