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Finding the Fourth Proportional to 251,358.72, 346,866.21 and 138,180.66

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Solution

The fourth proportional to 251,358.72, 346,866.21 and 138,180.66 is: 190,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,358.72 : 346,866.21 = 138,180.66 : x
  2. Step 2: Convert to fraction form
    251,358.72/346,866.21 = 138,180.66/x
  3. Step 3: Cross multiply
    251,358.72x = 346,866.21 × 138,180.66
  4. Step 4: Simplify right side
    251,358.72x = 47,930,201,829.50
  5. Step 5: Solve for x
    x = 47,930,201,829.50/251,358.72
  6. Step 6: Final answer
    x = 190,684.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.