Home / 255,724.33-383,572.62-78,231.36

Finding the Fourth Proportional to 255,724.33, 383,572.62 and 78,231.36

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Solution

The fourth proportional to 255,724.33, 383,572.62 and 78,231.36 is: 117,342.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,724.33 : 383,572.62 = 78,231.36 : x
  2. Step 2: Convert to fraction form
    255,724.33/383,572.62 = 78,231.36/x
  3. Step 3: Cross multiply
    255,724.33x = 383,572.62 × 78,231.36
  4. Step 4: Simplify right side
    255,724.33x = 30,007,405,412.34
  5. Step 5: Solve for x
    x = 30,007,405,412.34/255,724.33
  6. Step 6: Final answer
    x = 117,342.79

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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.