Home / 311,616.15-429,934.67-190,631.31

Finding the Fourth Proportional to 311,616.15, 429,934.67 and 190,631.31

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Solution

The fourth proportional to 311,616.15, 429,934.67 and 190,631.31 is: 263,012.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,616.15 : 429,934.67 = 190,631.31 : x
  2. Step 2: Convert to fraction form
    311,616.15/429,934.67 = 190,631.31/x
  3. Step 3: Cross multiply
    311,616.15x = 429,934.67 × 190,631.31
  4. Step 4: Simplify right side
    311,616.15x = 81,959,007,505.97
  5. Step 5: Solve for x
    x = 81,959,007,505.97/311,616.15
  6. Step 6: Final answer
    x = 263,012.71

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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.