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Finding the Fourth Proportional to 270,627.80, 405,941.70 and 83,696.60

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Solution

The fourth proportional to 270,627.80, 405,941.70 and 83,696.60 is: 125,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,627.80 : 405,941.70 = 83,696.60 : x
  2. Step 2: Convert to fraction form
    270,627.80/405,941.70 = 83,696.60/x
  3. Step 3: Cross multiply
    270,627.80x = 405,941.70 × 83,696.60
  4. Step 4: Simplify right side
    270,627.80x = 33,975,940,088.22
  5. Step 5: Solve for x
    x = 33,975,940,088.22/270,627.80
  6. Step 6: Final answer
    x = 125,544.90

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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.