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Finding the Fourth Proportional to 427,392.98, 640,523.19 and 227,282.48

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Solution

The fourth proportional to 427,392.98, 640,523.19 and 227,282.48 is: 340,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,392.98 : 640,523.19 = 227,282.48 : x
  2. Step 2: Convert to fraction form
    427,392.98/640,523.19 = 227,282.48/x
  3. Step 3: Cross multiply
    427,392.98x = 640,523.19 × 227,282.48
  4. Step 4: Simplify right side
    427,392.98x = 145,579,697,984.30
  5. Step 5: Solve for x
    x = 145,579,697,984.30/427,392.98
  6. Step 6: Final answer
    x = 340,622.58

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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.