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Finding the Fourth Proportional to 399,003.70, 550,625.13 and 255,764.02

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Solution

The fourth proportional to 399,003.70, 550,625.13 and 255,764.02 is: 352,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,003.70 : 550,625.13 = 255,764.02 : x
  2. Step 2: Convert to fraction form
    399,003.70/550,625.13 = 255,764.02/x
  3. Step 3: Cross multiply
    399,003.70x = 550,625.13 × 255,764.02
  4. Step 4: Simplify right side
    399,003.70x = 140,830,096,761.82
  5. Step 5: Solve for x
    x = 140,830,096,761.82/399,003.70
  6. Step 6: Final answer
    x = 352,954.36

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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.