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Finding the Fourth Proportional to 483,755.20, 667,309.68 and 290,111.28

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Solution

The fourth proportional to 483,755.20, 667,309.68 and 290,111.28 is: 400,190.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,755.20 : 667,309.68 = 290,111.28 : x
  2. Step 2: Convert to fraction form
    483,755.20/667,309.68 = 290,111.28/x
  3. Step 3: Cross multiply
    483,755.20x = 667,309.68 × 290,111.28
  4. Step 4: Simplify right side
    483,755.20x = 193,594,065,421.19
  5. Step 5: Solve for x
    x = 193,594,065,421.19/483,755.20
  6. Step 6: Final answer
    x = 400,190.15

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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.