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Finding the Fourth Proportional to 275,356.16, 379,946.40 and 162,163.52

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Solution

The fourth proportional to 275,356.16, 379,946.40 and 162,163.52 is: 223,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,356.16 : 379,946.40 = 162,163.52 : x
  2. Step 2: Convert to fraction form
    275,356.16/379,946.40 = 162,163.52/x
  3. Step 3: Cross multiply
    275,356.16x = 379,946.40 × 162,163.52
  4. Step 4: Simplify right side
    275,356.16x = 61,613,445,635.33
  5. Step 5: Solve for x
    x = 61,613,445,635.33/275,356.16
  6. Step 6: Final answer
    x = 223,759.10

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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.