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Finding the Fourth Proportional to 415,568.93, 623,388.76 and 131,183.40

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Solution

The fourth proportional to 415,568.93, 623,388.76 and 131,183.40 is: 196,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,568.93 : 623,388.76 = 131,183.40 : x
  2. Step 2: Convert to fraction form
    415,568.93/623,388.76 = 131,183.40/x
  3. Step 3: Cross multiply
    415,568.93x = 623,388.76 × 131,183.40
  4. Step 4: Simplify right side
    415,568.93x = 81,778,256,730.63
  5. Step 5: Solve for x
    x = 81,778,256,730.63/415,568.93
  6. Step 6: Final answer
    x = 196,786.26

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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.