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Finding the Fourth Proportional to 290,813.69, 436,298.30 and 263,053.37

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Solution

The fourth proportional to 290,813.69, 436,298.30 and 263,053.37 is: 394,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,813.69 : 436,298.30 = 263,053.37 : x
  2. Step 2: Convert to fraction form
    290,813.69/436,298.30 = 263,053.37/x
  3. Step 3: Cross multiply
    290,813.69x = 436,298.30 × 263,053.37
  4. Step 4: Simplify right side
    290,813.69x = 114,769,738,140.27
  5. Step 5: Solve for x
    x = 114,769,738,140.27/290,813.69
  6. Step 6: Final answer
    x = 394,650.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.