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Finding the Fourth Proportional to 345,212.69, 517,837.49 and 108,573.82

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Solution

The fourth proportional to 345,212.69, 517,837.49 and 108,573.82 is: 162,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,212.69 : 517,837.49 = 108,573.82 : x
  2. Step 2: Convert to fraction form
    345,212.69/517,837.49 = 108,573.82/x
  3. Step 3: Cross multiply
    345,212.69x = 517,837.49 × 108,573.82
  4. Step 4: Simplify right side
    345,212.69x = 56,223,593,885.64
  5. Step 5: Solve for x
    x = 56,223,593,885.64/345,212.69
  6. Step 6: Final answer
    x = 162,866.53

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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.