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Finding the Fourth Proportional to 449,435.93, 620,217.90 and 245,486.98

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Solution

The fourth proportional to 449,435.93, 620,217.90 and 245,486.98 is: 338,770.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,435.93 : 620,217.90 = 245,486.98 : x
  2. Step 2: Convert to fraction form
    449,435.93/620,217.90 = 245,486.98/x
  3. Step 3: Cross multiply
    449,435.93x = 620,217.90 × 245,486.98
  4. Step 4: Simplify right side
    449,435.93x = 152,255,419,212.94
  5. Step 5: Solve for x
    x = 152,255,419,212.94/449,435.93
  6. Step 6: Final answer
    x = 338,770.02

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1.5x scale

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.