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Finding the Fourth Proportional to 445,030.69, 667,609.66 and 137,308.74

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Solution

The fourth proportional to 445,030.69, 667,609.66 and 137,308.74 is: 205,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,030.69 : 667,609.66 = 137,308.74 : x
  2. Step 2: Convert to fraction form
    445,030.69/667,609.66 = 137,308.74/x
  3. Step 3: Cross multiply
    445,030.69x = 667,609.66 × 137,308.74
  4. Step 4: Simplify right side
    445,030.69x = 91,668,643,948.21
  5. Step 5: Solve for x
    x = 91,668,643,948.21/445,030.69
  6. Step 6: Final answer
    x = 205,982.75

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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.