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Finding the Fourth Proportional to 444,609.74, 666,984.33 and 145,021.15

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Solution

The fourth proportional to 444,609.74, 666,984.33 and 145,021.15 is: 217,554.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,609.74 : 666,984.33 = 145,021.15 : x
  2. Step 2: Convert to fraction form
    444,609.74/666,984.33 = 145,021.15/x
  3. Step 3: Cross multiply
    444,609.74x = 666,984.33 × 145,021.15
  4. Step 4: Simplify right side
    444,609.74x = 96,726,835,402.31
  5. Step 5: Solve for x
    x = 96,726,835,402.31/444,609.74
  6. Step 6: Final answer
    x = 217,554.47

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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.