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Finding the Fourth Proportional to 243,018.64, 335,365.26 and 135,582.28

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Solution

The fourth proportional to 243,018.64, 335,365.26 and 135,582.28 is: 187,103.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,018.64 : 335,365.26 = 135,582.28 : x
  2. Step 2: Convert to fraction form
    243,018.64/335,365.26 = 135,582.28/x
  3. Step 3: Cross multiply
    243,018.64x = 335,365.26 × 135,582.28
  4. Step 4: Simplify right side
    243,018.64x = 45,469,586,583.59
  5. Step 5: Solve for x
    x = 45,469,586,583.59/243,018.64
  6. Step 6: Final answer
    x = 187,103.29

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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.