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Finding the Fourth Proportional to 207,952.40, 311,928.60 and 202,120.40

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Solution

The fourth proportional to 207,952.40, 311,928.60 and 202,120.40 is: 303,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,952.40 : 311,928.60 = 202,120.40 : x
  2. Step 2: Convert to fraction form
    207,952.40/311,928.60 = 202,120.40/x
  3. Step 3: Cross multiply
    207,952.40x = 311,928.60 × 202,120.40
  4. Step 4: Simplify right side
    207,952.40x = 63,047,133,403.44
  5. Step 5: Solve for x
    x = 63,047,133,403.44/207,952.40
  6. Step 6: Final answer
    x = 303,180.60

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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.