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Finding the Fourth Proportional to 318,703.37, 439,224.84 and 298,479.11

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Solution

The fourth proportional to 318,703.37, 439,224.84 and 298,479.11 is: 411,352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,703.37 : 439,224.84 = 298,479.11 : x
  2. Step 2: Convert to fraction form
    318,703.37/439,224.84 = 298,479.11/x
  3. Step 3: Cross multiply
    318,703.37x = 439,224.84 × 298,479.11
  4. Step 4: Simplify right side
    318,703.37x = 131,099,437,136.97
  5. Step 5: Solve for x
    x = 131,099,437,136.97/318,703.37
  6. Step 6: Final answer
    x = 411,352.54

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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.