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Finding the Fourth Proportional to 449,704.96, 620,568.48 and 248,488

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Solution

The fourth proportional to 449,704.96, 620,568.48 and 248,488 is: 342,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,704.96 : 620,568.48 = 248,488 : x
  2. Step 2: Convert to fraction form
    449,704.96/620,568.48 = 248,488/x
  3. Step 3: Cross multiply
    449,704.96x = 620,568.48 × 248,488
  4. Step 4: Simplify right side
    449,704.96x = 154,203,820,458.24
  5. Step 5: Solve for x
    x = 154,203,820,458.24/449,704.96
  6. Step 6: Final answer
    x = 342,899.98

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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.