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Finding the Fourth Proportional to 449,493.72, 620,320.19 and 258,507.26

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Solution

The fourth proportional to 449,493.72, 620,320.19 and 258,507.26 is: 356,750.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,493.72 : 620,320.19 = 258,507.26 : x
  2. Step 2: Convert to fraction form
    449,493.72/620,320.19 = 258,507.26/x
  3. Step 3: Cross multiply
    449,493.72x = 620,320.19 × 258,507.26
  4. Step 4: Simplify right side
    449,493.72x = 160,357,268,245.44
  5. Step 5: Solve for x
    x = 160,357,268,245.44/449,493.72
  6. Step 6: Final answer
    x = 356,750.85

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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.