Home / 415,569.31-623,389.32-131,183.78

Finding the Fourth Proportional to 415,569.31, 623,389.32 and 131,183.78

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Solution

The fourth proportional to 415,569.31, 623,389.32 and 131,183.78 is: 196,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,569.31 : 623,389.32 = 131,183.78 : x
  2. Step 2: Convert to fraction form
    415,569.31/623,389.32 = 131,183.78/x
  3. Step 3: Cross multiply
    415,569.31x = 623,389.32 × 131,183.78
  4. Step 4: Simplify right side
    415,569.31x = 81,778,564,292.28
  5. Step 5: Solve for x
    x = 81,778,564,292.28/415,569.31
  6. Step 6: Final answer
    x = 196,786.82

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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.