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Finding the Fourth Proportional to 449,685.42, 620,601.26 and 256,101.32

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Solution

The fourth proportional to 449,685.42, 620,601.26 and 256,101.32 is: 353,439.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,685.42 : 620,601.26 = 256,101.32 : x
  2. Step 2: Convert to fraction form
    449,685.42/620,601.26 = 256,101.32/x
  3. Step 3: Cross multiply
    449,685.42x = 620,601.26 × 256,101.32
  4. Step 4: Simplify right side
    449,685.42x = 158,936,797,496.15
  5. Step 5: Solve for x
    x = 158,936,797,496.15/449,685.42
  6. Step 6: Final answer
    x = 353,439.96

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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.