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Finding the Fourth Proportional to 481,287.30, 663,967.98 and 290,194.53

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Solution

The fourth proportional to 481,287.30, 663,967.98 and 290,194.53 is: 400,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,287.30 : 663,967.98 = 290,194.53 : x
  2. Step 2: Convert to fraction form
    481,287.30/663,967.98 = 290,194.53/x
  3. Step 3: Cross multiply
    481,287.30x = 663,967.98 × 290,194.53
  4. Step 4: Simplify right side
    481,287.30x = 192,679,875,891.15
  5. Step 5: Solve for x
    x = 192,679,875,891.15/481,287.30
  6. Step 6: Final answer
    x = 400,342.74

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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.