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Finding the Fourth Proportional to 422,054.48, 582,436.88 and 231,085.64

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Solution

The fourth proportional to 422,054.48, 582,436.88 and 231,085.64 is: 318,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,054.48 : 582,436.88 = 231,085.64 : x
  2. Step 2: Convert to fraction form
    422,054.48/582,436.88 = 231,085.64/x
  3. Step 3: Cross multiply
    422,054.48x = 582,436.88 × 231,085.64
  4. Step 4: Simplify right side
    422,054.48x = 134,592,799,174.40
  5. Step 5: Solve for x
    x = 134,592,799,174.40/422,054.48
  6. Step 6: Final answer
    x = 318,899.11

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1.5x scale

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.