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Finding the Fourth Proportional to 285,725.30, 394,310.50 and 158,393.30

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Solution

The fourth proportional to 285,725.30, 394,310.50 and 158,393.30 is: 218,588.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,725.30 : 394,310.50 = 158,393.30 : x
  2. Step 2: Convert to fraction form
    285,725.30/394,310.50 = 158,393.30/x
  3. Step 3: Cross multiply
    285,725.30x = 394,310.50 × 158,393.30
  4. Step 4: Simplify right side
    285,725.30x = 62,456,141,319.65
  5. Step 5: Solve for x
    x = 62,456,141,319.65/285,725.30
  6. Step 6: Final answer
    x = 218,588.07

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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.