Home / 255,727.62-383,606.78-78,236.16

Finding the Fourth Proportional to 255,727.62, 383,606.78 and 78,236.16

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Solution

The fourth proportional to 255,727.62, 383,606.78 and 78,236.16 is: 117,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,727.62 : 383,606.78 = 78,236.16 : x
  2. Step 2: Convert to fraction form
    255,727.62/383,606.78 = 78,236.16/x
  3. Step 3: Cross multiply
    255,727.62x = 383,606.78 × 78,236.16
  4. Step 4: Simplify right side
    255,727.62x = 30,011,921,025.98
  5. Step 5: Solve for x
    x = 30,011,921,025.98/255,727.62
  6. Step 6: Final answer
    x = 117,358.93

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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.