Home / 285,520.48-394,001.10-158,186.80

Finding the Fourth Proportional to 285,520.48, 394,001.10 and 158,186.80

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Solution

The fourth proportional to 285,520.48, 394,001.10 and 158,186.80 is: 218,288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,520.48 : 394,001.10 = 158,186.80 : x
  2. Step 2: Convert to fraction form
    285,520.48/394,001.10 = 158,186.80/x
  3. Step 3: Cross multiply
    285,520.48x = 394,001.10 × 158,186.80
  4. Step 4: Simplify right side
    285,520.48x = 62,325,773,205.48
  5. Step 5: Solve for x
    x = 62,325,773,205.48/285,520.48
  6. Step 6: Final answer
    x = 218,288.28

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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.