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Finding the Fourth Proportional to 391,795.95, 587,915.37 and 167,135.16

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Solution

The fourth proportional to 391,795.95, 587,915.37 and 167,135.16 is: 250,797.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,795.95 : 587,915.37 = 167,135.16 : x
  2. Step 2: Convert to fraction form
    391,795.95/587,915.37 = 167,135.16/x
  3. Step 3: Cross multiply
    391,795.95x = 587,915.37 × 167,135.16
  4. Step 4: Simplify right side
    391,795.95x = 98,261,329,431.41
  5. Step 5: Solve for x
    x = 98,261,329,431.41/391,795.95
  6. Step 6: Final answer
    x = 250,797.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.