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Finding the Fourth Proportional to 290,698.90, 401,274.09 and 169,879.44

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Solution

The fourth proportional to 290,698.90, 401,274.09 and 169,879.44 is: 234,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,698.90 : 401,274.09 = 169,879.44 : x
  2. Step 2: Convert to fraction form
    290,698.90/401,274.09 = 169,879.44/x
  3. Step 3: Cross multiply
    290,698.90x = 401,274.09 × 169,879.44
  4. Step 4: Simplify right side
    290,698.90x = 68,168,219,200.49
  5. Step 5: Solve for x
    x = 68,168,219,200.49/290,698.90
  6. Step 6: Final answer
    x = 234,497.69

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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.