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Finding the Fourth Proportional to 247,634.10, 371,123.10 and 219,421.80

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Solution

The fourth proportional to 247,634.10, 371,123.10 and 219,421.80 is: 328,842.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,634.10 : 371,123.10 = 219,421.80 : x
  2. Step 2: Convert to fraction form
    247,634.10/371,123.10 = 219,421.80/x
  3. Step 3: Cross multiply
    247,634.10x = 371,123.10 × 219,421.80
  4. Step 4: Simplify right side
    247,634.10x = 81,432,498,623.58
  5. Step 5: Solve for x
    x = 81,432,498,623.58/247,634.10
  6. Step 6: Final answer
    x = 328,842.02

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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.