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Finding the Fourth Proportional to 318,286, 439,245.72 and 175,056.88

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Solution

The fourth proportional to 318,286, 439,245.72 and 175,056.88 is: 241,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,286 : 439,245.72 = 175,056.88 : x
  2. Step 2: Convert to fraction form
    318,286/439,245.72 = 175,056.88/x
  3. Step 3: Cross multiply
    318,286x = 439,245.72 × 175,056.88
  4. Step 4: Simplify right side
    318,286x = 76,892,985,296.55
  5. Step 5: Solve for x
    x = 76,892,985,296.55/318,286
  6. Step 6: Final answer
    x = 241,584.57

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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.