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Finding the Fourth Proportional to 445,007.70, 667,584.35 and 145,401.30

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Solution

The fourth proportional to 445,007.70, 667,584.35 and 145,401.30 is: 218,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,007.70 : 667,584.35 = 145,401.30 : x
  2. Step 2: Convert to fraction form
    445,007.70/667,584.35 = 145,401.30/x
  3. Step 3: Cross multiply
    445,007.70x = 667,584.35 × 145,401.30
  4. Step 4: Simplify right side
    445,007.70x = 97,067,632,349.66
  5. Step 5: Solve for x
    x = 97,067,632,349.66/445,007.70
  6. Step 6: Final answer
    x = 218,125.74

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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.