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Finding the Fourth Proportional to 290,647.44, 401,131.06 and 163,323.04

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Solution

The fourth proportional to 290,647.44, 401,131.06 and 163,323.04 is: 225,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,647.44 : 401,131.06 = 163,323.04 : x
  2. Step 2: Convert to fraction form
    290,647.44/401,131.06 = 163,323.04/x
  3. Step 3: Cross multiply
    290,647.44x = 401,131.06 × 163,323.04
  4. Step 4: Simplify right side
    290,647.44x = 65,513,944,157.62
  5. Step 5: Solve for x
    x = 65,513,944,157.62/290,647.44
  6. Step 6: Final answer
    x = 225,406.92

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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.