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Finding the Fourth Proportional to 471,491.75, 650,672.66 and 290,308.21

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Solution

The fourth proportional to 471,491.75, 650,672.66 and 290,308.21 is: 400,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,491.75 : 650,672.66 = 290,308.21 : x
  2. Step 2: Convert to fraction form
    471,491.75/650,672.66 = 290,308.21/x
  3. Step 3: Cross multiply
    471,491.75x = 650,672.66 × 290,308.21
  4. Step 4: Simplify right side
    471,491.75x = 188,895,614,319.63
  5. Step 5: Solve for x
    x = 188,895,614,319.63/471,491.75
  6. Step 6: Final answer
    x = 400,633.97

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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.