Home / 318,715,491.60-439,821,405.72-194,947,076.88

Finding the Fourth Proportional to 318,715,491.60, 439,821,405.72 and 194,947,076.88

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Solution

The fourth proportional to 318,715,491.60, 439,821,405.72 and 194,947,076.88 is: 269,023,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,715,491.60 : 439,821,405.72 = 194,947,076.88 : x
  2. Step 2: Convert to fraction form
    318,715,491.60/439,821,405.72 = 194,947,076.88/x
  3. Step 3: Cross multiply
    318,715,491.60x = 439,821,405.72 × 194,947,076.88
  4. Step 4: Simplify right side
    318,715,491.60x = 85,741,897,394,366,512
  5. Step 5: Solve for x
    x = 85,741,897,394,366,512/318,715,491.60
  6. Step 6: Final answer
    x = 269,023,312.81

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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.