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Finding the Fourth Proportional to 481,308.29, 663,996.89 and 290,215.52

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Solution

The fourth proportional to 481,308.29, 663,996.89 and 290,215.52 is: 400,371.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,308.29 : 663,996.89 = 290,215.52 : x
  2. Step 2: Convert to fraction form
    481,308.29/663,996.89 = 290,215.52/x
  3. Step 3: Cross multiply
    481,308.29x = 663,996.89 × 290,215.52
  4. Step 4: Simplify right side
    481,308.29x = 192,702,197,938.67
  5. Step 5: Solve for x
    x = 192,702,197,938.67/481,308.29
  6. Step 6: Final answer
    x = 400,371.66

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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.