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Finding the Fourth Proportional to 243,238.26, 335,665.62 and 135,810.12

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Solution

The fourth proportional to 243,238.26, 335,665.62 and 135,810.12 is: 187,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,238.26 : 335,665.62 = 135,810.12 : x
  2. Step 2: Convert to fraction form
    243,238.26/335,665.62 = 135,810.12/x
  3. Step 3: Cross multiply
    243,238.26x = 335,665.62 × 135,810.12
  4. Step 4: Simplify right side
    243,238.26x = 45,586,788,132.07
  5. Step 5: Solve for x
    x = 45,586,788,132.07/243,238.26
  6. Step 6: Final answer
    x = 187,416.19

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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.