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Finding the Fourth Proportional to 255,791.20, 353,016.81 and 191,148.18

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Solution

The fourth proportional to 255,791.20, 353,016.81 and 191,148.18 is: 263,803.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,791.20 : 353,016.81 = 191,148.18 : x
  2. Step 2: Convert to fraction form
    255,791.20/353,016.81 = 191,148.18/x
  3. Step 3: Cross multiply
    255,791.20x = 353,016.81 × 191,148.18
  4. Step 4: Simplify right side
    255,791.20x = 67,478,522,064.72
  5. Step 5: Solve for x
    x = 67,478,522,064.72/255,791.20
  6. Step 6: Final answer
    x = 263,803.14

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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.