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Finding the Fourth Proportional to 219,269.42, 328,938.41 and 92,909.96

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Solution

The fourth proportional to 219,269.42, 328,938.41 and 92,909.96 is: 139,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,269.42 : 328,938.41 = 92,909.96 : x
  2. Step 2: Convert to fraction form
    219,269.42/328,938.41 = 92,909.96/x
  3. Step 3: Cross multiply
    219,269.42x = 328,938.41 × 92,909.96
  4. Step 4: Simplify right side
    219,269.42x = 30,561,653,103.15
  5. Step 5: Solve for x
    x = 30,561,653,103.15/219,269.42
  6. Step 6: Final answer
    x = 139,379.46

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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.