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Finding the Fourth Proportional to 449,515.02, 620,352.87 and 255,926.57

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Solution

The fourth proportional to 449,515.02, 620,352.87 and 255,926.57 is: 353,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,515.02 : 620,352.87 = 255,926.57 : x
  2. Step 2: Convert to fraction form
    449,515.02/620,352.87 = 255,926.57/x
  3. Step 3: Cross multiply
    449,515.02x = 620,352.87 × 255,926.57
  4. Step 4: Simplify right side
    449,515.02x = 158,764,779,586.85
  5. Step 5: Solve for x
    x = 158,764,779,586.85/449,515.02
  6. Step 6: Final answer
    x = 353,191.27

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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.