Home / 285,519.48-393,999.72-158,185.80

Finding the Fourth Proportional to 285,519.48, 393,999.72 and 158,185.80

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Solution

The fourth proportional to 285,519.48, 393,999.72 and 158,185.80 is: 218,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,519.48 : 393,999.72 = 158,185.80 : x
  2. Step 2: Convert to fraction form
    285,519.48/393,999.72 = 158,185.80/x
  3. Step 3: Cross multiply
    285,519.48x = 393,999.72 × 158,185.80
  4. Step 4: Simplify right side
    285,519.48x = 62,325,160,907.98
  5. Step 5: Solve for x
    x = 62,325,160,907.98/285,519.48
  6. Step 6: Final answer
    x = 218,286.90

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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.