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Finding the Fourth Proportional to 449,268.99, 620,016.45 and 245,338.86

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Solution

The fourth proportional to 449,268.99, 620,016.45 and 245,338.86 is: 338,581.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,268.99 : 620,016.45 = 245,338.86 : x
  2. Step 2: Convert to fraction form
    449,268.99/620,016.45 = 245,338.86/x
  3. Step 3: Cross multiply
    449,268.99x = 620,016.45 × 245,338.86
  4. Step 4: Simplify right side
    449,268.99x = 152,114,129,024.25
  5. Step 5: Solve for x
    x = 152,114,129,024.25/449,268.99
  6. Step 6: Final answer
    x = 338,581.41

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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.