Home / 311,629.52-430,248.85-195,502.18

Finding the Fourth Proportional to 311,629.52, 430,248.85 and 195,502.18

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Solution

The fourth proportional to 311,629.52, 430,248.85 and 195,502.18 is: 269,918.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,629.52 : 430,248.85 = 195,502.18 : x
  2. Step 2: Convert to fraction form
    311,629.52/430,248.85 = 195,502.18/x
  3. Step 3: Cross multiply
    311,629.52x = 430,248.85 × 195,502.18
  4. Step 4: Simplify right side
    311,629.52x = 84,114,586,846.10
  5. Step 5: Solve for x
    x = 84,114,586,846.10/311,629.52
  6. Step 6: Final answer
    x = 269,918.54

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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.