Home / 290,086.11-400,186.98-188,137.28

Finding the Fourth Proportional to 290,086.11, 400,186.98 and 188,137.28

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Solution

The fourth proportional to 290,086.11, 400,186.98 and 188,137.28 is: 259,543.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,086.11 : 400,186.98 = 188,137.28 : x
  2. Step 2: Convert to fraction form
    290,086.11/400,186.98 = 188,137.28/x
  3. Step 3: Cross multiply
    290,086.11x = 400,186.98 × 188,137.28
  4. Step 4: Simplify right side
    290,086.11x = 75,290,090,909.08
  5. Step 5: Solve for x
    x = 75,290,090,909.08/290,086.11
  6. Step 6: Final answer
    x = 259,543.94

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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.