Home / 311,884,230.38-430,265,133.78-188,056,115.42

Finding the Fourth Proportional to 311,884,230.38, 430,265,133.78 and 188,056,115.42

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Solution

The fourth proportional to 311,884,230.38, 430,265,133.78 and 188,056,115.42 is: 259,435,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,884,230.38 : 430,265,133.78 = 188,056,115.42 : x
  2. Step 2: Convert to fraction form
    311,884,230.38/430,265,133.78 = 188,056,115.42/x
  3. Step 3: Cross multiply
    311,884,230.38x = 430,265,133.78 × 188,056,115.42
  4. Step 4: Simplify right side
    311,884,230.38x = 80,913,989,656,476,880
  5. Step 5: Solve for x
    x = 80,913,989,656,476,880/311,884,230.38
  6. Step 6: Final answer
    x = 259,435,975.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.