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Finding the Fourth Proportional to 312,655.44, 431,444 and 199,466

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Solution

The fourth proportional to 312,655.44, 431,444 and 199,466 is: 275,250.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,655.44 : 431,444 = 199,466 : x
  2. Step 2: Convert to fraction form
    312,655.44/431,444 = 199,466/x
  3. Step 3: Cross multiply
    312,655.44x = 431,444 × 199,466
  4. Step 4: Simplify right side
    312,655.44x = 86,058,408,904
  5. Step 5: Solve for x
    x = 86,058,408,904/312,655.44
  6. Step 6: Final answer
    x = 275,250.00

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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.