Home / 285,621.53-394,156.88-158,297.12

Finding the Fourth Proportional to 285,621.53, 394,156.88 and 158,297.12

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Solution

The fourth proportional to 285,621.53, 394,156.88 and 158,297.12 is: 218,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,621.53 : 394,156.88 = 158,297.12 : x
  2. Step 2: Convert to fraction form
    285,621.53/394,156.88 = 158,297.12/x
  3. Step 3: Cross multiply
    285,621.53x = 394,156.88 × 158,297.12
  4. Step 4: Simplify right side
    285,621.53x = 62,393,899,132.04
  5. Step 5: Solve for x
    x = 62,393,899,132.04/285,621.53
  6. Step 6: Final answer
    x = 218,449.57

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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.