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Finding the Fourth Proportional to 445,101.81, 667,709.31 and 141,387.62

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Solution

The fourth proportional to 445,101.81, 667,709.31 and 141,387.62 is: 212,099.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,101.81 : 667,709.31 = 141,387.62 : x
  2. Step 2: Convert to fraction form
    445,101.81/667,709.31 = 141,387.62/x
  3. Step 3: Cross multiply
    445,101.81x = 667,709.31 × 141,387.62
  4. Step 4: Simplify right side
    445,101.81x = 94,405,830,192.74
  5. Step 5: Solve for x
    x = 94,405,830,192.74/445,101.81
  6. Step 6: Final answer
    x = 212,099.41

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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.