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Finding the Fourth Proportional to 405,110.60, 607,665.90 and 109,622.60

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Solution

The fourth proportional to 405,110.60, 607,665.90 and 109,622.60 is: 164,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,110.60 : 607,665.90 = 109,622.60 : x
  2. Step 2: Convert to fraction form
    405,110.60/607,665.90 = 109,622.60/x
  3. Step 3: Cross multiply
    405,110.60x = 607,665.90 × 109,622.60
  4. Step 4: Simplify right side
    405,110.60x = 66,613,915,889.34
  5. Step 5: Solve for x
    x = 66,613,915,889.34/405,110.60
  6. Step 6: Final answer
    x = 164,433.90

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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.