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Finding the Fourth Proportional to 484,122.72, 668,042.54 and 280,132.96

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Solution

The fourth proportional to 484,122.72, 668,042.54 and 280,132.96 is: 386,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,122.72 : 668,042.54 = 280,132.96 : x
  2. Step 2: Convert to fraction form
    484,122.72/668,042.54 = 280,132.96/x
  3. Step 3: Cross multiply
    484,122.72x = 668,042.54 × 280,132.96
  4. Step 4: Simplify right side
    484,122.72x = 187,140,734,136.12
  5. Step 5: Solve for x
    x = 187,140,734,136.12/484,122.72
  6. Step 6: Final answer
    x = 386,556.40

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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.