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Finding the Fourth Proportional to 243,419.08, 335,918.31 and 135,989.14

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Solution

The fourth proportional to 243,419.08, 335,918.31 and 135,989.14 is: 187,665.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,419.08 : 335,918.31 = 135,989.14 : x
  2. Step 2: Convert to fraction form
    243,419.08/335,918.31 = 135,989.14/x
  3. Step 3: Cross multiply
    243,419.08x = 335,918.31 × 135,989.14
  4. Step 4: Simplify right side
    243,419.08x = 45,681,242,087.15
  5. Step 5: Solve for x
    x = 45,681,242,087.15/243,419.08
  6. Step 6: Final answer
    x = 187,665.00

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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.