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Finding the Fourth Proportional to 219,072, 328,575.04 and 61,280

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Solution

The fourth proportional to 219,072, 328,575.04 and 61,280 is: 91,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,072 : 328,575.04 = 61,280 : x
  2. Step 2: Convert to fraction form
    219,072/328,575.04 = 61,280/x
  3. Step 3: Cross multiply
    219,072x = 328,575.04 × 61,280
  4. Step 4: Simplify right side
    219,072x = 20,135,078,451.20
  5. Step 5: Solve for x
    x = 20,135,078,451.20/219,072
  6. Step 6: Final answer
    x = 91,910.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.