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Finding the Fourth Proportional to 263,603.60, 394,867.80 and 163,456.40

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Solution

The fourth proportional to 263,603.60, 394,867.80 and 163,456.40 is: 244,851.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,603.60 : 394,867.80 = 163,456.40 : x
  2. Step 2: Convert to fraction form
    263,603.60/394,867.80 = 163,456.40/x
  3. Step 3: Cross multiply
    263,603.60x = 394,867.80 × 163,456.40
  4. Step 4: Simplify right side
    263,603.60x = 64,543,669,063.92
  5. Step 5: Solve for x
    x = 64,543,669,063.92/263,603.60
  6. Step 6: Final answer
    x = 244,851.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.