Home / 286,007.87-394,715.37-156,971.28

Finding the Fourth Proportional to 286,007.87, 394,715.37 and 156,971.28

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Solution

The fourth proportional to 286,007.87, 394,715.37 and 156,971.28 is: 216,633.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,007.87 : 394,715.37 = 156,971.28 : x
  2. Step 2: Convert to fraction form
    286,007.87/394,715.37 = 156,971.28/x
  3. Step 3: Cross multiply
    286,007.87x = 394,715.37 × 156,971.28
  4. Step 4: Simplify right side
    286,007.87x = 61,958,976,864.57
  5. Step 5: Solve for x
    x = 61,958,976,864.57/286,007.87
  6. Step 6: Final answer
    x = 216,633.82

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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.