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Finding the Fourth Proportional to 243,342.63, 335,809.31 and 135,914.22

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Solution

The fourth proportional to 243,342.63, 335,809.31 and 135,914.22 is: 187,559.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,342.63 : 335,809.31 = 135,914.22 : x
  2. Step 2: Convert to fraction form
    243,342.63/335,809.31 = 135,914.22/x
  3. Step 3: Cross multiply
    243,342.63x = 335,809.31 × 135,914.22
  4. Step 4: Simplify right side
    243,342.63x = 45,641,259,757.82
  5. Step 5: Solve for x
    x = 45,641,259,757.82/243,342.63
  6. Step 6: Final answer
    x = 187,559.66

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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.