Home / 255,727.09-383,576.73-78,234.10

Finding the Fourth Proportional to 255,727.09, 383,576.73 and 78,234.10

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Solution

The fourth proportional to 255,727.09, 383,576.73 and 78,234.10 is: 117,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,727.09 : 383,576.73 = 78,234.10 : x
  2. Step 2: Convert to fraction form
    255,727.09/383,576.73 = 78,234.10/x
  3. Step 3: Cross multiply
    255,727.09x = 383,576.73 × 78,234.10
  4. Step 4: Simplify right side
    255,727.09x = 30,008,780,252.49
  5. Step 5: Solve for x
    x = 30,008,780,252.49/255,727.09
  6. Step 6: Final answer
    x = 117,346.90

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1.5x scale

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.