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Finding the Fourth Proportional to 263,565.93, 395,298.62 and 128,494.42

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Solution

The fourth proportional to 263,565.93, 395,298.62 and 128,494.42 is: 192,717.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,565.93 : 395,298.62 = 128,494.42 : x
  2. Step 2: Convert to fraction form
    263,565.93/395,298.62 = 128,494.42/x
  3. Step 3: Cross multiply
    263,565.93x = 395,298.62 × 128,494.42
  4. Step 4: Simplify right side
    263,565.93x = 50,793,667,228.00
  5. Step 5: Solve for x
    x = 50,793,667,228.00/263,565.93
  6. Step 6: Final answer
    x = 192,717.12

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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.