Home / 286,005.87-394,712.61-156,969.28

Finding the Fourth Proportional to 286,005.87, 394,712.61 and 156,969.28

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Solution

The fourth proportional to 286,005.87, 394,712.61 and 156,969.28 is: 216,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,005.87 : 394,712.61 = 156,969.28 : x
  2. Step 2: Convert to fraction form
    286,005.87/394,712.61 = 156,969.28/x
  3. Step 3: Cross multiply
    286,005.87x = 394,712.61 × 156,969.28
  4. Step 4: Simplify right side
    286,005.87x = 61,957,752,766.07
  5. Step 5: Solve for x
    x = 61,957,752,766.07/286,005.87
  6. Step 6: Final answer
    x = 216,631.05

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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.