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Finding the Fourth Proportional to 383,074.41, 528,403.17 and 275,474.01

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Solution

The fourth proportional to 383,074.41, 528,403.17 and 275,474.01 is: 379,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,074.41 : 528,403.17 = 275,474.01 : x
  2. Step 2: Convert to fraction form
    383,074.41/528,403.17 = 275,474.01/x
  3. Step 3: Cross multiply
    383,074.41x = 528,403.17 × 275,474.01
  4. Step 4: Simplify right side
    383,074.41x = 145,561,340,136.61
  5. Step 5: Solve for x
    x = 145,561,340,136.61/383,074.41
  6. Step 6: Final answer
    x = 379,981.89

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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.