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Finding the Fourth Proportional to 296,830.20, 445,245.30 and 119,245.80

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Solution

The fourth proportional to 296,830.20, 445,245.30 and 119,245.80 is: 178,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,830.20 : 445,245.30 = 119,245.80 : x
  2. Step 2: Convert to fraction form
    296,830.20/445,245.30 = 119,245.80/x
  3. Step 3: Cross multiply
    296,830.20x = 445,245.30 × 119,245.80
  4. Step 4: Simplify right side
    296,830.20x = 53,093,631,994.74
  5. Step 5: Solve for x
    x = 53,093,631,994.74/296,830.20
  6. Step 6: Final answer
    x = 178,868.70

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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.