Home / 205,783.40-309,331.20-193,973.60

Finding the Fourth Proportional to 205,783.40, 309,331.20 and 193,973.60

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Solution

The fourth proportional to 205,783.40, 309,331.20 and 193,973.60 is: 291,578.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,783.40 : 309,331.20 = 193,973.60 : x
  2. Step 2: Convert to fraction form
    205,783.40/309,331.20 = 193,973.60/x
  3. Step 3: Cross multiply
    205,783.40x = 309,331.20 × 193,973.60
  4. Step 4: Simplify right side
    205,783.40x = 60,002,086,456.32
  5. Step 5: Solve for x
    x = 60,002,086,456.32/205,783.40
  6. Step 6: Final answer
    x = 291,578.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.