Home / 445,021.20-667,596.60-145,429.20

Finding the Fourth Proportional to 445,021.20, 667,596.60 and 145,429.20

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Solution

The fourth proportional to 445,021.20, 667,596.60 and 145,429.20 is: 218,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,021.20 : 667,596.60 = 145,429.20 : x
  2. Step 2: Convert to fraction form
    445,021.20/667,596.60 = 145,429.20/x
  3. Step 3: Cross multiply
    445,021.20x = 667,596.60 × 145,429.20
  4. Step 4: Simplify right side
    445,021.20x = 97,088,039,460.72
  5. Step 5: Solve for x
    x = 97,088,039,460.72/445,021.20
  6. Step 6: Final answer
    x = 218,164.98

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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.