Home / 255,835.26-383,753.82-78,341.55

Finding the Fourth Proportional to 255,835.26, 383,753.82 and 78,341.55

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Solution

The fourth proportional to 255,835.26, 383,753.82 and 78,341.55 is: 117,512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,835.26 : 383,753.82 = 78,341.55 : x
  2. Step 2: Convert to fraction form
    255,835.26/383,753.82 = 78,341.55/x
  3. Step 3: Cross multiply
    255,835.26x = 383,753.82 × 78,341.55
  4. Step 4: Simplify right side
    255,835.26x = 30,063,869,077.22
  5. Step 5: Solve for x
    x = 30,063,869,077.22/255,835.26
  6. Step 6: Final answer
    x = 117,512.61

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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.