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Finding the Fourth Proportional to 290,698.47, 401,273.50 and 169,879.02

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Solution

The fourth proportional to 290,698.47, 401,273.50 and 169,879.02 is: 234,497.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,698.47 : 401,273.50 = 169,879.02 : x
  2. Step 2: Convert to fraction form
    290,698.47/401,273.50 = 169,879.02/x
  3. Step 3: Cross multiply
    290,698.47x = 401,273.50 × 169,879.02
  4. Step 4: Simplify right side
    290,698.47x = 68,167,951,184.55
  5. Step 5: Solve for x
    x = 68,167,951,184.55/290,698.47
  6. Step 6: Final answer
    x = 234,497.11

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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.