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Finding the Fourth Proportional to 449,790.60, 620,734.14 and 258,832.56

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Solution

The fourth proportional to 449,790.60, 620,734.14 and 258,832.56 is: 357,202.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,790.60 : 620,734.14 = 258,832.56 : x
  2. Step 2: Convert to fraction form
    449,790.60/620,734.14 = 258,832.56/x
  3. Step 3: Cross multiply
    449,790.60x = 620,734.14 × 258,832.56
  4. Step 4: Simplify right side
    449,790.60x = 160,666,206,535.60
  5. Step 5: Solve for x
    x = 160,666,206,535.60/449,790.60
  6. Step 6: Final answer
    x = 357,202.23

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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.