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Finding the Fourth Proportional to 455,764.88, 628,968.21 and 251,828.94

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Solution

The fourth proportional to 455,764.88, 628,968.21 and 251,828.94 is: 347,530.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,764.88 : 628,968.21 = 251,828.94 : x
  2. Step 2: Convert to fraction form
    455,764.88/628,968.21 = 251,828.94/x
  3. Step 3: Cross multiply
    455,764.88x = 628,968.21 × 251,828.94
  4. Step 4: Simplify right side
    455,764.88x = 158,392,397,618.00
  5. Step 5: Solve for x
    x = 158,392,397,618.00/455,764.88
  6. Step 6: Final answer
    x = 347,530.94

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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.