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Finding the Fourth Proportional to 200,339.60, 300,676.26 and 105,603.80

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Solution

The fourth proportional to 200,339.60, 300,676.26 and 105,603.80 is: 158,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,339.60 : 300,676.26 = 105,603.80 : x
  2. Step 2: Convert to fraction form
    200,339.60/300,676.26 = 105,603.80/x
  3. Step 3: Cross multiply
    200,339.60x = 300,676.26 × 105,603.80
  4. Step 4: Simplify right side
    200,339.60x = 31,752,555,625.79
  5. Step 5: Solve for x
    x = 31,752,555,625.79/200,339.60
  6. Step 6: Final answer
    x = 158,493.66

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1.5x scale

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.