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Finding the Fourth Proportional to 219,223.52, 328,846.62 and 69,479.72

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Solution

The fourth proportional to 219,223.52, 328,846.62 and 69,479.72 is: 104,223.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,223.52 : 328,846.62 = 69,479.72 : x
  2. Step 2: Convert to fraction form
    219,223.52/328,846.62 = 69,479.72/x
  3. Step 3: Cross multiply
    219,223.52x = 328,846.62 × 69,479.72
  4. Step 4: Simplify right side
    219,223.52x = 22,848,171,080.55
  5. Step 5: Solve for x
    x = 22,848,171,080.55/219,223.52
  6. Step 6: Final answer
    x = 104,223.17

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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.