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Finding the Fourth Proportional to 231,007.25, 346,649.12 and 99,679.25

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Solution

The fourth proportional to 231,007.25, 346,649.12 and 99,679.25 is: 149,578.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,007.25 : 346,649.12 = 99,679.25 : x
  2. Step 2: Convert to fraction form
    231,007.25/346,649.12 = 99,679.25/x
  3. Step 3: Cross multiply
    231,007.25x = 346,649.12 × 99,679.25
  4. Step 4: Simplify right side
    231,007.25x = 34,553,723,796.36
  5. Step 5: Solve for x
    x = 34,553,723,796.36/231,007.25
  6. Step 6: Final answer
    x = 149,578.53

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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.