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Finding the Fourth Proportional to 290,631.88, 401,267.71 and 259,909.65

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Solution

The fourth proportional to 290,631.88, 401,267.71 and 259,909.65 is: 358,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,631.88 : 401,267.71 = 259,909.65 : x
  2. Step 2: Convert to fraction form
    290,631.88/401,267.71 = 259,909.65/x
  3. Step 3: Cross multiply
    290,631.88x = 401,267.71 × 259,909.65
  4. Step 4: Simplify right side
    290,631.88x = 104,293,350,062.40
  5. Step 5: Solve for x
    x = 104,293,350,062.40/290,631.88
  6. Step 6: Final answer
    x = 358,850.34

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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.