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Finding the Fourth Proportional to 451,219.28, 622,449.50 and 305,975.88

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Solution

The fourth proportional to 451,219.28, 622,449.50 and 305,975.88 is: 422,088.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,219.28 : 622,449.50 = 305,975.88 : x
  2. Step 2: Convert to fraction form
    451,219.28/622,449.50 = 305,975.88/x
  3. Step 3: Cross multiply
    451,219.28x = 622,449.50 × 305,975.88
  4. Step 4: Simplify right side
    451,219.28x = 190,454,531,988.18
  5. Step 5: Solve for x
    x = 190,454,531,988.18/451,219.28
  6. Step 6: Final answer
    x = 422,088.64

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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.