Home / 285,845.87-394,467.88-156,785.40

Finding the Fourth Proportional to 285,845.87, 394,467.88 and 156,785.40

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Solution

The fourth proportional to 285,845.87, 394,467.88 and 156,785.40 is: 216,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,845.87 : 394,467.88 = 156,785.40 : x
  2. Step 2: Convert to fraction form
    285,845.87/394,467.88 = 156,785.40/x
  3. Step 3: Cross multiply
    285,845.87x = 394,467.88 × 156,785.40
  4. Step 4: Simplify right side
    285,845.87x = 61,846,803,960.99
  5. Step 5: Solve for x
    x = 61,846,803,960.99/285,845.87
  6. Step 6: Final answer
    x = 216,364.17

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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.