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Finding the Fourth Proportional to 290,992.96, 401,570.56 and 163,668.80

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Solution

The fourth proportional to 290,992.96, 401,570.56 and 163,668.80 is: 225,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,992.96 : 401,570.56 = 163,668.80 : x
  2. Step 2: Convert to fraction form
    290,992.96/401,570.56 = 163,668.80/x
  3. Step 3: Cross multiply
    290,992.96x = 401,570.56 × 163,668.80
  4. Step 4: Simplify right side
    290,992.96x = 65,724,571,670.53
  5. Step 5: Solve for x
    x = 65,724,571,670.53/290,992.96
  6. Step 6: Final answer
    x = 225,863.10

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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.