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Finding the Fourth Proportional to 489,387.42, 733,959.63 and 134,383.86

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Solution

The fourth proportional to 489,387.42, 733,959.63 and 134,383.86 is: 201,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,387.42 : 733,959.63 = 134,383.86 : x
  2. Step 2: Convert to fraction form
    489,387.42/733,959.63 = 134,383.86/x
  3. Step 3: Cross multiply
    489,387.42x = 733,959.63 × 134,383.86
  4. Step 4: Simplify right side
    489,387.42x = 98,632,328,163.57
  5. Step 5: Solve for x
    x = 98,632,328,163.57/489,387.42
  6. Step 6: Final answer
    x = 201,542.43

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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.