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Finding the Fourth Proportional to 219,214.72, 328,796.34 and 61,455.88

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Solution

The fourth proportional to 219,214.72, 328,796.34 and 61,455.88 is: 92,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,214.72 : 328,796.34 = 61,455.88 : x
  2. Step 2: Convert to fraction form
    219,214.72/328,796.34 = 61,455.88/x
  3. Step 3: Cross multiply
    219,214.72x = 328,796.34 × 61,455.88
  4. Step 4: Simplify right side
    219,214.72x = 20,206,468,415.48
  5. Step 5: Solve for x
    x = 20,206,468,415.48/219,214.72
  6. Step 6: Final answer
    x = 92,176.60

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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.