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Finding the Fourth Proportional to 449,353.22, 620,111.63 and 255,751.43

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Solution

The fourth proportional to 449,353.22, 620,111.63 and 255,751.43 is: 352,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,353.22 : 620,111.63 = 255,751.43 : x
  2. Step 2: Convert to fraction form
    449,353.22/620,111.63 = 255,751.43/x
  3. Step 3: Cross multiply
    449,353.22x = 620,111.63 × 255,751.43
  4. Step 4: Simplify right side
    449,353.22x = 158,594,433,670.95
  5. Step 5: Solve for x
    x = 158,594,433,670.95/449,353.22
  6. Step 6: Final answer
    x = 352,939.35

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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.