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Finding the Fourth Proportional to 257,427.36, 355,129.68 and 161,986.68

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Solution

The fourth proportional to 257,427.36, 355,129.68 and 161,986.68 is: 223,466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,427.36 : 355,129.68 = 161,986.68 : x
  2. Step 2: Convert to fraction form
    257,427.36/355,129.68 = 161,986.68/x
  3. Step 3: Cross multiply
    257,427.36x = 355,129.68 × 161,986.68
  4. Step 4: Simplify right side
    257,427.36x = 57,526,277,832.66
  5. Step 5: Solve for x
    x = 57,526,277,832.66/257,427.36
  6. Step 6: Final answer
    x = 223,466.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.