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Finding the Fourth Proportional to 455,209.44, 628,189.08 and 251,260.41

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Solution

The fourth proportional to 455,209.44, 628,189.08 and 251,260.41 is: 346,739.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,209.44 : 628,189.08 = 251,260.41 : x
  2. Step 2: Convert to fraction form
    455,209.44/628,189.08 = 251,260.41/x
  3. Step 3: Cross multiply
    455,209.44x = 628,189.08 × 251,260.41
  4. Step 4: Simplify right side
    455,209.44x = 157,839,047,368.80
  5. Step 5: Solve for x
    x = 157,839,047,368.80/455,209.44
  6. Step 6: Final answer
    x = 346,739.40

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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.