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Finding the Fourth Proportional to 405,636.27, 607,522.79 and 202,609.20

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Solution

The fourth proportional to 405,636.27, 607,522.79 and 202,609.20 is: 303,448.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,636.27 : 607,522.79 = 202,609.20 : x
  2. Step 2: Convert to fraction form
    405,636.27/607,522.79 = 202,609.20/x
  3. Step 3: Cross multiply
    405,636.27x = 607,522.79 × 202,609.20
  4. Step 4: Simplify right side
    405,636.27x = 123,089,703,932.20
  5. Step 5: Solve for x
    x = 123,089,703,932.20/405,636.27
  6. Step 6: Final answer
    x = 303,448.47

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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.