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Finding the Fourth Proportional to 449,365.22, 620,128.20 and 255,763.44

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Solution

The fourth proportional to 449,365.22, 620,128.20 and 255,763.44 is: 352,955.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,365.22 : 620,128.20 = 255,763.44 : x
  2. Step 2: Convert to fraction form
    449,365.22/620,128.20 = 255,763.44/x
  3. Step 3: Cross multiply
    449,365.22x = 620,128.20 × 255,763.44
  4. Step 4: Simplify right side
    449,365.22x = 158,606,121,673.01
  5. Step 5: Solve for x
    x = 158,606,121,673.01/449,365.22
  6. Step 6: Final answer
    x = 352,955.94

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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.