Home / 290,249.60-400,545.20-161,188.16

Finding the Fourth Proportional to 290,249.60, 400,545.20 and 161,188.16

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Solution

The fourth proportional to 290,249.60, 400,545.20 and 161,188.16 is: 222,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,249.60 : 400,545.20 = 161,188.16 : x
  2. Step 2: Convert to fraction form
    290,249.60/400,545.20 = 161,188.16/x
  3. Step 3: Cross multiply
    290,249.60x = 400,545.20 × 161,188.16
  4. Step 4: Simplify right side
    290,249.60x = 64,563,143,784.83
  5. Step 5: Solve for x
    x = 64,563,143,784.83/290,249.60
  6. Step 6: Final answer
    x = 222,440.08

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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.