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Finding the Fourth Proportional to 481,308.79, 663,997.57 and 290,216.02

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Solution

The fourth proportional to 481,308.79, 663,997.57 and 290,216.02 is: 400,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,308.79 : 663,997.57 = 290,216.02 : x
  2. Step 2: Convert to fraction form
    481,308.79/663,997.57 = 290,216.02/x
  3. Step 3: Cross multiply
    481,308.79x = 663,997.57 × 290,216.02
  4. Step 4: Simplify right side
    481,308.79x = 192,702,732,055.07
  5. Step 5: Solve for x
    x = 192,702,732,055.07/481,308.79
  6. Step 6: Final answer
    x = 400,372.35

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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.