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Finding the Fourth Proportional to 449,525.50, 620,363.01 and 258,538.66

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Solution

The fourth proportional to 449,525.50, 620,363.01 and 258,538.66 is: 356,793.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,525.50 : 620,363.01 = 258,538.66 : x
  2. Step 2: Convert to fraction form
    449,525.50/620,363.01 = 258,538.66/x
  3. Step 3: Cross multiply
    449,525.50x = 620,363.01 × 258,538.66
  4. Step 4: Simplify right side
    449,525.50x = 160,387,821,318.97
  5. Step 5: Solve for x
    x = 160,387,821,318.97/449,525.50
  6. Step 6: Final answer
    x = 356,793.60

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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.