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Finding the Fourth Proportional to 219,219.30, 328,861.80 and 92,859.30

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Solution

The fourth proportional to 219,219.30, 328,861.80 and 92,859.30 is: 139,302.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,219.30 : 328,861.80 = 92,859.30 : x
  2. Step 2: Convert to fraction form
    219,219.30/328,861.80 = 92,859.30/x
  3. Step 3: Cross multiply
    219,219.30x = 328,861.80 × 92,859.30
  4. Step 4: Simplify right side
    219,219.30x = 30,537,876,544.74
  5. Step 5: Solve for x
    x = 30,537,876,544.74/219,219.30
  6. Step 6: Final answer
    x = 139,302.86

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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.