Home / 209,505.15-312,832.96-197,665.35

Finding the Fourth Proportional to 209,505.15, 312,832.96 and 197,665.35

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Solution

The fourth proportional to 209,505.15, 312,832.96 and 197,665.35 is: 295,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,505.15 : 312,832.96 = 197,665.35 : x
  2. Step 2: Convert to fraction form
    209,505.15/312,832.96 = 197,665.35/x
  3. Step 3: Cross multiply
    209,505.15x = 312,832.96 × 197,665.35
  4. Step 4: Simplify right side
    209,505.15x = 61,836,236,529.94
  5. Step 5: Solve for x
    x = 61,836,236,529.94/209,505.15
  6. Step 6: Final answer
    x = 295,153.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.