Home / 311,961.96-430,507.53-168,721.97

Finding the Fourth Proportional to 311,961.96, 430,507.53 and 168,721.97

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Solution

The fourth proportional to 311,961.96, 430,507.53 and 168,721.97 is: 232,836.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,961.96 : 430,507.53 = 168,721.97 : x
  2. Step 2: Convert to fraction form
    311,961.96/430,507.53 = 168,721.97/x
  3. Step 3: Cross multiply
    311,961.96x = 430,507.53 × 168,721.97
  4. Step 4: Simplify right side
    311,961.96x = 72,636,076,408.90
  5. Step 5: Solve for x
    x = 72,636,076,408.90/311,961.96
  6. Step 6: Final answer
    x = 232,836.33

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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.