Home / 255,750.56-383,612.22-78,257.70

Finding the Fourth Proportional to 255,750.56, 383,612.22 and 78,257.70

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Solution

The fourth proportional to 255,750.56, 383,612.22 and 78,257.70 is: 117,382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,750.56 : 383,612.22 = 78,257.70 : x
  2. Step 2: Convert to fraction form
    255,750.56/383,612.22 = 78,257.70/x
  3. Step 3: Cross multiply
    255,750.56x = 383,612.22 × 78,257.70
  4. Step 4: Simplify right side
    255,750.56x = 30,020,610,029.09
  5. Step 5: Solve for x
    x = 30,020,610,029.09/255,750.56
  6. Step 6: Final answer
    x = 117,382.38

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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.