Home / 259,475.20-388,905.60-193,734.40

Finding the Fourth Proportional to 259,475.20, 388,905.60 and 193,734.40

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Solution

The fourth proportional to 259,475.20, 388,905.60 and 193,734.40 is: 290,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,475.20 : 388,905.60 = 193,734.40 : x
  2. Step 2: Convert to fraction form
    259,475.20/388,905.60 = 193,734.40/x
  3. Step 3: Cross multiply
    259,475.20x = 388,905.60 × 193,734.40
  4. Step 4: Simplify right side
    259,475.20x = 75,344,393,072.64
  5. Step 5: Solve for x
    x = 75,344,393,072.64/259,475.20
  6. Step 6: Final answer
    x = 290,372.23

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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.