Home / 286,002.97-394,683-156,943.60

Finding the Fourth Proportional to 286,002.97, 394,683 and 156,943.60

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Solution

The fourth proportional to 286,002.97, 394,683 and 156,943.60 is: 216,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,002.97 : 394,683 = 156,943.60 : x
  2. Step 2: Convert to fraction form
    286,002.97/394,683 = 156,943.60/x
  3. Step 3: Cross multiply
    286,002.97x = 394,683 × 156,943.60
  4. Step 4: Simplify right side
    286,002.97x = 61,942,970,878.80
  5. Step 5: Solve for x
    x = 61,942,970,878.80/286,002.97
  6. Step 6: Final answer
    x = 216,581.57

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1.5x scale

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.