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Finding the Fourth Proportional to 207,928.21, 311,903.67 and 65,762.87

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Solution

The fourth proportional to 207,928.21, 311,903.67 and 65,762.87 is: 98,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,928.21 : 311,903.67 = 65,762.87 : x
  2. Step 2: Convert to fraction form
    207,928.21/311,903.67 = 65,762.87/x
  3. Step 3: Cross multiply
    207,928.21x = 311,903.67 × 65,762.87
  4. Step 4: Simplify right side
    207,928.21x = 20,511,680,173.92
  5. Step 5: Solve for x
    x = 20,511,680,173.92/207,928.21
  6. Step 6: Final answer
    x = 98,647.89

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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.