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Finding the Fourth Proportional to 455,393.44, 628,410.54 and 251,411.44

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Solution

The fourth proportional to 455,393.44, 628,410.54 and 251,411.44 is: 346,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,393.44 : 628,410.54 = 251,411.44 : x
  2. Step 2: Convert to fraction form
    455,393.44/628,410.54 = 251,411.44/x
  3. Step 3: Cross multiply
    455,393.44x = 628,410.54 × 251,411.44
  4. Step 4: Simplify right side
    455,393.44x = 157,989,598,772.58
  5. Step 5: Solve for x
    x = 157,989,598,772.58/455,393.44
  6. Step 6: Final answer
    x = 346,929.90

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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.