Home / 311,839.80-430,405.68-197,045.56

Finding the Fourth Proportional to 311,839.80, 430,405.68 and 197,045.56

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Solution

The fourth proportional to 311,839.80, 430,405.68 and 197,045.56 is: 271,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,839.80 : 430,405.68 = 197,045.56 : x
  2. Step 2: Convert to fraction form
    311,839.80/430,405.68 = 197,045.56/x
  3. Step 3: Cross multiply
    311,839.80x = 430,405.68 × 197,045.56
  4. Step 4: Simplify right side
    311,839.80x = 84,809,528,242.78
  5. Step 5: Solve for x
    x = 84,809,528,242.78/311,839.80
  6. Step 6: Final answer
    x = 271,965.05

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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.