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Finding the Fourth Proportional to 318,625.93, 439,745.78 and 191,309.73

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Solution

The fourth proportional to 318,625.93, 439,745.78 and 191,309.73 is: 264,032.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,625.93 : 439,745.78 = 191,309.73 : x
  2. Step 2: Convert to fraction form
    318,625.93/439,745.78 = 191,309.73/x
  3. Step 3: Cross multiply
    318,625.93x = 439,745.78 × 191,309.73
  4. Step 4: Simplify right side
    318,625.93x = 84,127,646,440.44
  5. Step 5: Solve for x
    x = 84,127,646,440.44/318,625.93
  6. Step 6: Final answer
    x = 264,032.64

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1.5x scale

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.