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Finding the Fourth Proportional to 308,968.70, 463,453.05 and 131,431.10

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Solution

The fourth proportional to 308,968.70, 463,453.05 and 131,431.10 is: 197,146.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,968.70 : 463,453.05 = 131,431.10 : x
  2. Step 2: Convert to fraction form
    308,968.70/463,453.05 = 131,431.10/x
  3. Step 3: Cross multiply
    308,968.70x = 463,453.05 × 131,431.10
  4. Step 4: Simplify right side
    308,968.70x = 60,912,144,159.86
  5. Step 5: Solve for x
    x = 60,912,144,159.86/308,968.70
  6. Step 6: Final answer
    x = 197,146.65

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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.