Home / 285,582.47-394,108.88-156,512.39

Finding the Fourth Proportional to 285,582.47, 394,108.88 and 156,512.39

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Solution

The fourth proportional to 285,582.47, 394,108.88 and 156,512.39 is: 215,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,582.47 : 394,108.88 = 156,512.39 : x
  2. Step 2: Convert to fraction form
    285,582.47/394,108.88 = 156,512.39/x
  3. Step 3: Cross multiply
    285,582.47x = 394,108.88 × 156,512.39
  4. Step 4: Simplify right side
    285,582.47x = 61,682,919,975.92
  5. Step 5: Solve for x
    x = 61,682,919,975.92/285,582.47
  6. Step 6: Final answer
    x = 215,989.87

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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.