Home / 311,899.42-430,425.66-190,996.57

Finding the Fourth Proportional to 311,899.42, 430,425.66 and 190,996.57

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Solution

The fourth proportional to 311,899.42, 430,425.66 and 190,996.57 is: 263,578.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,899.42 : 430,425.66 = 190,996.57 : x
  2. Step 2: Convert to fraction form
    311,899.42/430,425.66 = 190,996.57/x
  3. Step 3: Cross multiply
    311,899.42x = 430,425.66 × 190,996.57
  4. Step 4: Simplify right side
    311,899.42x = 82,209,824,699.99
  5. Step 5: Solve for x
    x = 82,209,824,699.99/311,899.42
  6. Step 6: Final answer
    x = 263,578.00

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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.