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Finding the Fourth Proportional to 290,630.88, 401,266.33 and 259,908.65

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Solution

The fourth proportional to 290,630.88, 401,266.33 and 259,908.65 is: 358,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,630.88 : 401,266.33 = 259,908.65 : x
  2. Step 2: Convert to fraction form
    290,630.88/401,266.33 = 259,908.65/x
  3. Step 3: Cross multiply
    290,630.88x = 401,266.33 × 259,908.65
  4. Step 4: Simplify right side
    290,630.88x = 104,292,591,408.27
  5. Step 5: Solve for x
    x = 104,292,591,408.27/290,630.88
  6. Step 6: Final answer
    x = 358,848.97

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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.