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Finding the Fourth Proportional to 286,028.88, 394,728.72 and 158,716.32

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Solution

The fourth proportional to 286,028.88, 394,728.72 and 158,716.32 is: 219,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,028.88 : 394,728.72 = 158,716.32 : x
  2. Step 2: Convert to fraction form
    286,028.88/394,728.72 = 158,716.32/x
  3. Step 3: Cross multiply
    286,028.88x = 394,728.72 × 158,716.32
  4. Step 4: Simplify right side
    286,028.88x = 62,649,889,836.71
  5. Step 5: Solve for x
    x = 62,649,889,836.71/286,028.88
  6. Step 6: Final answer
    x = 219,033.44

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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.