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Finding the Fourth Proportional to 219,344.80, 328,989.66 and 69,600.64

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Solution

The fourth proportional to 219,344.80, 328,989.66 and 69,600.64 is: 104,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,344.80 : 328,989.66 = 69,600.64 : x
  2. Step 2: Convert to fraction form
    219,344.80/328,989.66 = 69,600.64/x
  3. Step 3: Cross multiply
    219,344.80x = 328,989.66 × 69,600.64
  4. Step 4: Simplify right side
    219,344.80x = 22,897,890,889.38
  5. Step 5: Solve for x
    x = 22,897,890,889.38/219,344.80
  6. Step 6: Final answer
    x = 104,392.22

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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.