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Finding the Fourth Proportional to 203,404.06, 280,696.83 and 113,980.06

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Solution

The fourth proportional to 203,404.06, 280,696.83 and 113,980.06 is: 157,292.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,404.06 : 280,696.83 = 113,980.06 : x
  2. Step 2: Convert to fraction form
    203,404.06/280,696.83 = 113,980.06/x
  3. Step 3: Cross multiply
    203,404.06x = 280,696.83 × 113,980.06
  4. Step 4: Simplify right side
    203,404.06x = 31,993,841,525.21
  5. Step 5: Solve for x
    x = 31,993,841,525.21/203,404.06
  6. Step 6: Final answer
    x = 157,292.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.