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Finding the Fourth Proportional to 258,414.22, 356,583.05 and 155,042.93

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Solution

The fourth proportional to 258,414.22, 356,583.05 and 155,042.93 is: 213,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,414.22 : 356,583.05 = 155,042.93 : x
  2. Step 2: Convert to fraction form
    258,414.22/356,583.05 = 155,042.93/x
  3. Step 3: Cross multiply
    258,414.22x = 356,583.05 × 155,042.93
  4. Step 4: Simplify right side
    258,414.22x = 55,285,679,077.42
  5. Step 5: Solve for x
    x = 55,285,679,077.42/258,414.22
  6. Step 6: Final answer
    x = 213,942.10

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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.