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Finding the Fourth Proportional to 219,304.51, 328,997.80 and 69,504.58

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Solution

The fourth proportional to 219,304.51, 328,997.80 and 69,504.58 is: 104,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,304.51 : 328,997.80 = 69,504.58 : x
  2. Step 2: Convert to fraction form
    219,304.51/328,997.80 = 69,504.58/x
  3. Step 3: Cross multiply
    219,304.51x = 328,997.80 × 69,504.58
  4. Step 4: Simplify right side
    219,304.51x = 22,866,854,408.05
  5. Step 5: Solve for x
    x = 22,866,854,408.05/219,304.51
  6. Step 6: Final answer
    x = 104,269.88

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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.