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Finding the Fourth Proportional to 427,271.04, 640,943.28 and 111,727.44

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Solution

The fourth proportional to 427,271.04, 640,943.28 and 111,727.44 is: 167,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,271.04 : 640,943.28 = 111,727.44 : x
  2. Step 2: Convert to fraction form
    427,271.04/640,943.28 = 111,727.44/x
  3. Step 3: Cross multiply
    427,271.04x = 640,943.28 × 111,727.44
  4. Step 4: Simplify right side
    427,271.04x = 71,610,951,859.60
  5. Step 5: Solve for x
    x = 71,610,951,859.60/427,271.04
  6. Step 6: Final answer
    x = 167,600.76

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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.