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Finding the Fourth Proportional to 286,118.72, 394,825.44 and 158,794.40

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Solution

The fourth proportional to 286,118.72, 394,825.44 and 158,794.40 is: 219,126.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,118.72 : 394,825.44 = 158,794.40 : x
  2. Step 2: Convert to fraction form
    286,118.72/394,825.44 = 158,794.40/x
  3. Step 3: Cross multiply
    286,118.72x = 394,825.44 × 158,794.40
  4. Step 4: Simplify right side
    286,118.72x = 62,696,068,849.54
  5. Step 5: Solve for x
    x = 62,696,068,849.54/286,118.72
  6. Step 6: Final answer
    x = 219,126.06

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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.