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Finding the Fourth Proportional to 286,034.88, 394,728.22 and 158,711.40

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Solution

The fourth proportional to 286,034.88, 394,728.22 and 158,711.40 is: 219,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,034.88 : 394,728.22 = 158,711.40 : x
  2. Step 2: Convert to fraction form
    286,034.88/394,728.22 = 158,711.40/x
  3. Step 3: Cross multiply
    286,034.88x = 394,728.22 × 158,711.40
  4. Step 4: Simplify right side
    286,034.88x = 62,647,868,415.71
  5. Step 5: Solve for x
    x = 62,647,868,415.71/286,034.88
  6. Step 6: Final answer
    x = 219,021.78

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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.