Home / 290,185.40-400,456.63-161,124.12

Finding the Fourth Proportional to 290,185.40, 400,456.63 and 161,124.12

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Solution

The fourth proportional to 290,185.40, 400,456.63 and 161,124.12 is: 222,351.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,185.40 : 400,456.63 = 161,124.12 : x
  2. Step 2: Convert to fraction form
    290,185.40/400,456.63 = 161,124.12/x
  3. Step 3: Cross multiply
    290,185.40x = 400,456.63 × 161,124.12
  4. Step 4: Simplify right side
    290,185.40x = 64,523,222,106.92
  5. Step 5: Solve for x
    x = 64,523,222,106.92/290,185.40
  6. Step 6: Final answer
    x = 222,351.72

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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.