Home / 285,845.63-394,467.53-156,785.15

Finding the Fourth Proportional to 285,845.63, 394,467.53 and 156,785.15

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Solution

The fourth proportional to 285,845.63, 394,467.53 and 156,785.15 is: 216,363.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,845.63 : 394,467.53 = 156,785.15 : x
  2. Step 2: Convert to fraction form
    285,845.63/394,467.53 = 156,785.15/x
  3. Step 3: Cross multiply
    285,845.63x = 394,467.53 × 156,785.15
  4. Step 4: Simplify right side
    285,845.63x = 61,846,650,077.25
  5. Step 5: Solve for x
    x = 61,846,650,077.25/285,845.63
  6. Step 6: Final answer
    x = 216,363.82

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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.