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Finding the Fourth Proportional to 270,696.11, 405,879.75 and 135,603.07

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Solution

The fourth proportional to 270,696.11, 405,879.75 and 135,603.07 is: 203,322.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,696.11 : 405,879.75 = 135,603.07 : x
  2. Step 2: Convert to fraction form
    270,696.11/405,879.75 = 135,603.07/x
  3. Step 3: Cross multiply
    270,696.11x = 405,879.75 × 135,603.07
  4. Step 4: Simplify right side
    270,696.11x = 55,038,541,799.28
  5. Step 5: Solve for x
    x = 55,038,541,799.28/270,696.11
  6. Step 6: Final answer
    x = 203,322.25

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1.5x scale

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.