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Finding the Fourth Proportional to 449,621.19, 620,458.83 and 245,679.12

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Solution

The fourth proportional to 449,621.19, 620,458.83 and 245,679.12 is: 339,027.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,621.19 : 620,458.83 = 245,679.12 : x
  2. Step 2: Convert to fraction form
    449,621.19/620,458.83 = 245,679.12/x
  3. Step 3: Cross multiply
    449,621.19x = 620,458.83 × 245,679.12
  4. Step 4: Simplify right side
    449,621.19x = 152,433,779,350.63
  5. Step 5: Solve for x
    x = 152,433,779,350.63/449,621.19
  6. Step 6: Final answer
    x = 339,027.12

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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.