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Finding the Fourth Proportional to 202,110.55, 278,919.48 and 111,469.30

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Solution

The fourth proportional to 202,110.55, 278,919.48 and 111,469.30 is: 153,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,110.55 : 278,919.48 = 111,469.30 : x
  2. Step 2: Convert to fraction form
    202,110.55/278,919.48 = 111,469.30/x
  3. Step 3: Cross multiply
    202,110.55x = 278,919.48 × 111,469.30
  4. Step 4: Simplify right side
    202,110.55x = 31,090,959,191.96
  5. Step 5: Solve for x
    x = 31,090,959,191.96/202,110.55
  6. Step 6: Final answer
    x = 153,831.45

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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.