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Finding the Fourth Proportional to 306,036.75, 422,380.80 and 254,968.50

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Solution

The fourth proportional to 306,036.75, 422,380.80 and 254,968.50 is: 351,898.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,036.75 : 422,380.80 = 254,968.50 : x
  2. Step 2: Convert to fraction form
    306,036.75/422,380.80 = 254,968.50/x
  3. Step 3: Cross multiply
    306,036.75x = 422,380.80 × 254,968.50
  4. Step 4: Simplify right side
    306,036.75x = 107,693,799,004.80
  5. Step 5: Solve for x
    x = 107,693,799,004.80/306,036.75
  6. Step 6: Final answer
    x = 351,898.26

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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.