Home / 383,160.72-528,739.47-281,612.64

Finding the Fourth Proportional to 383,160.72, 528,739.47 and 281,612.64

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Solution

The fourth proportional to 383,160.72, 528,739.47 and 281,612.64 is: 388,609.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,160.72 : 528,739.47 = 281,612.64 : x
  2. Step 2: Convert to fraction form
    383,160.72/528,739.47 = 281,612.64/x
  3. Step 3: Cross multiply
    383,160.72x = 528,739.47 × 281,612.64
  4. Step 4: Simplify right side
    383,160.72x = 148,899,718,018.90
  5. Step 5: Solve for x
    x = 148,899,718,018.90/383,160.72
  6. Step 6: Final answer
    x = 388,609.04

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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.