Home / 311,884,231.38-430,265,135.16-188,056,116.42

Finding the Fourth Proportional to 311,884,231.38, 430,265,135.16 and 188,056,116.42

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Solution

The fourth proportional to 311,884,231.38, 430,265,135.16 and 188,056,116.42 is: 259,435,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,884,231.38 : 430,265,135.16 = 188,056,116.42 : x
  2. Step 2: Convert to fraction form
    311,884,231.38/430,265,135.16 = 188,056,116.42/x
  3. Step 3: Cross multiply
    311,884,231.38x = 430,265,135.16 × 188,056,116.42
  4. Step 4: Simplify right side
    311,884,231.38x = 80,913,990,349,116,000
  5. Step 5: Solve for x
    x = 80,913,990,349,116,000/311,884,231.38
  6. Step 6: Final answer
    x = 259,435,977.22

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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.