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Finding the Fourth Proportional to 275,354.16, 379,943.64 and 162,161.52

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Solution

The fourth proportional to 275,354.16, 379,943.64 and 162,161.52 is: 223,756.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,354.16 : 379,943.64 = 162,161.52 : x
  2. Step 2: Convert to fraction form
    275,354.16/379,943.64 = 162,161.52/x
  3. Step 3: Cross multiply
    275,354.16x = 379,943.64 × 162,161.52
  4. Step 4: Simplify right side
    275,354.16x = 61,612,238,176.73
  5. Step 5: Solve for x
    x = 61,612,238,176.73/275,354.16
  6. Step 6: Final answer
    x = 223,756.34

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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.