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Finding the Fourth Proportional to 290,907, 401,456.52 and 190,305

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Solution

The fourth proportional to 290,907, 401,456.52 and 190,305 is: 262,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,907 : 401,456.52 = 190,305 : x
  2. Step 2: Convert to fraction form
    290,907/401,456.52 = 190,305/x
  3. Step 3: Cross multiply
    290,907x = 401,456.52 × 190,305
  4. Step 4: Simplify right side
    290,907x = 76,399,183,038.60
  5. Step 5: Solve for x
    x = 76,399,183,038.60/290,907
  6. Step 6: Final answer
    x = 262,624.08

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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.