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Finding the Fourth Proportional to 231,630.45, 347,186.48 and 131,838.45

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Solution

The fourth proportional to 231,630.45, 347,186.48 and 131,838.45 is: 197,610.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,630.45 : 347,186.48 = 131,838.45 : x
  2. Step 2: Convert to fraction form
    231,630.45/347,186.48 = 131,838.45/x
  3. Step 3: Cross multiply
    231,630.45x = 347,186.48 × 131,838.45
  4. Step 4: Simplify right side
    231,630.45x = 45,772,526,724.96
  5. Step 5: Solve for x
    x = 45,772,526,724.96/231,630.45
  6. Step 6: Final answer
    x = 197,610.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.