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Finding the Fourth Proportional to 311,485.75, 429,850.29 and 168,245.76

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Solution

The fourth proportional to 311,485.75, 429,850.29 and 168,245.76 is: 232,179.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,485.75 : 429,850.29 = 168,245.76 : x
  2. Step 2: Convert to fraction form
    311,485.75/429,850.29 = 168,245.76/x
  3. Step 3: Cross multiply
    311,485.75x = 429,850.29 × 168,245.76
  4. Step 4: Simplify right side
    311,485.75x = 72,320,488,552.22
  5. Step 5: Solve for x
    x = 72,320,488,552.22/311,485.75
  6. Step 6: Final answer
    x = 232,179.12

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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.