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Finding the Fourth Proportional to 263,408.91, 363,506.58 and 154,578.39

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Solution

The fourth proportional to 263,408.91, 363,506.58 and 154,578.39 is: 213,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,408.91 : 363,506.58 = 154,578.39 : x
  2. Step 2: Convert to fraction form
    263,408.91/363,506.58 = 154,578.39/x
  3. Step 3: Cross multiply
    263,408.91x = 363,506.58 × 154,578.39
  4. Step 4: Simplify right side
    263,408.91x = 56,190,261,890.81
  5. Step 5: Solve for x
    x = 56,190,261,890.81/263,408.91
  6. Step 6: Final answer
    x = 213,319.52

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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.