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Finding the Fourth Proportional to 323,130.75, 445,910.31 and 187,167.35

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Solution

The fourth proportional to 323,130.75, 445,910.31 and 187,167.35 is: 258,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,130.75 : 445,910.31 = 187,167.35 : x
  2. Step 2: Convert to fraction form
    323,130.75/445,910.31 = 187,167.35/x
  3. Step 3: Cross multiply
    323,130.75x = 445,910.31 × 187,167.35
  4. Step 4: Simplify right side
    323,130.75x = 83,459,851,137.82
  5. Step 5: Solve for x
    x = 83,459,851,137.82/323,130.75
  6. Step 6: Final answer
    x = 258,285.08

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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.