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Finding the Fourth Proportional to 258,343.78, 356,365.78 and 161,379.07

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Solution

The fourth proportional to 258,343.78, 356,365.78 and 161,379.07 is: 222,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,343.78 : 356,365.78 = 161,379.07 : x
  2. Step 2: Convert to fraction form
    258,343.78/356,365.78 = 161,379.07/x
  3. Step 3: Cross multiply
    258,343.78x = 356,365.78 × 161,379.07
  4. Step 4: Simplify right side
    258,343.78x = 57,509,978,156.22
  5. Step 5: Solve for x
    x = 57,509,978,156.22/258,343.78
  6. Step 6: Final answer
    x = 222,610.27

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1.5x scale

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.