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Finding the Fourth Proportional to 290,804.02, 401,145.69 and 169,919.65

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Solution

The fourth proportional to 290,804.02, 401,145.69 and 169,919.65 is: 234,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,804.02 : 401,145.69 = 169,919.65 : x
  2. Step 2: Convert to fraction form
    290,804.02/401,145.69 = 169,919.65/x
  3. Step 3: Cross multiply
    290,804.02x = 401,145.69 × 169,919.65
  4. Step 4: Simplify right side
    290,804.02x = 68,162,534,776.32
  5. Step 5: Solve for x
    x = 68,162,534,776.32/290,804.02
  6. Step 6: Final answer
    x = 234,393.37

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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.