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Finding the Fourth Proportional to 203,741.75, 305,543.40 and 70,590.92

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Solution

The fourth proportional to 203,741.75, 305,543.40 and 70,590.92 is: 105,862.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,741.75 : 305,543.40 = 70,590.92 : x
  2. Step 2: Convert to fraction form
    203,741.75/305,543.40 = 70,590.92/x
  3. Step 3: Cross multiply
    203,741.75x = 305,543.40 × 70,590.92
  4. Step 4: Simplify right side
    203,741.75x = 21,568,588,178.21
  5. Step 5: Solve for x
    x = 21,568,588,178.21/203,741.75
  6. Step 6: Final answer
    x = 105,862.39

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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.