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Finding the Fourth Proportional to 243,334.35, 335,768.20 and 135,890.68

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Solution

The fourth proportional to 243,334.35, 335,768.20 and 135,890.68 is: 187,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,334.35 : 335,768.20 = 135,890.68 : x
  2. Step 2: Convert to fraction form
    243,334.35/335,768.20 = 135,890.68/x
  3. Step 3: Cross multiply
    243,334.35x = 335,768.20 × 135,890.68
  4. Step 4: Simplify right side
    243,334.35x = 45,627,769,020.38
  5. Step 5: Solve for x
    x = 45,627,769,020.38/243,334.35
  6. Step 6: Final answer
    x = 187,510.60

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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.