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Finding the Fourth Proportional to 483,721.74, 667,485.90 and 302,453.64

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Solution

The fourth proportional to 483,721.74, 667,485.90 and 302,453.64 is: 417,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,721.74 : 667,485.90 = 302,453.64 : x
  2. Step 2: Convert to fraction form
    483,721.74/667,485.90 = 302,453.64/x
  3. Step 3: Cross multiply
    483,721.74x = 667,485.90 × 302,453.64
  4. Step 4: Simplify right side
    483,721.74x = 201,883,540,103.68
  5. Step 5: Solve for x
    x = 201,883,540,103.68/483,721.74
  6. Step 6: Final answer
    x = 417,354.70

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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.