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Finding the Fourth Proportional to 207,816.10, 311,724.15 and 148,524.10

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Solution

The fourth proportional to 207,816.10, 311,724.15 and 148,524.10 is: 222,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,816.10 : 311,724.15 = 148,524.10 : x
  2. Step 2: Convert to fraction form
    207,816.10/311,724.15 = 148,524.10/x
  3. Step 3: Cross multiply
    207,816.10x = 311,724.15 × 148,524.10
  4. Step 4: Simplify right side
    207,816.10x = 46,298,548,827.02
  5. Step 5: Solve for x
    x = 46,298,548,827.02/207,816.10
  6. Step 6: Final answer
    x = 222,786.15

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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.