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Finding the Fourth Proportional to 243,334.85, 335,768.89 and 135,891.18

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Solution

The fourth proportional to 243,334.85, 335,768.89 and 135,891.18 is: 187,511.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,334.85 : 335,768.89 = 135,891.18 : x
  2. Step 2: Convert to fraction form
    243,334.85/335,768.89 = 135,891.18/x
  3. Step 3: Cross multiply
    243,334.85x = 335,768.89 × 135,891.18
  4. Step 4: Simplify right side
    243,334.85x = 45,628,030,669.39
  5. Step 5: Solve for x
    x = 45,628,030,669.39/243,334.85
  6. Step 6: Final answer
    x = 187,511.29

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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.