Home / 255,340.12-383,010.58-105,415.86

Finding the Fourth Proportional to 255,340.12, 383,010.58 and 105,415.86

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Solution

The fourth proportional to 255,340.12, 383,010.58 and 105,415.86 is: 158,123.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,340.12 : 383,010.58 = 105,415.86 : x
  2. Step 2: Convert to fraction form
    255,340.12/383,010.58 = 105,415.86/x
  3. Step 3: Cross multiply
    255,340.12x = 383,010.58 × 105,415.86
  4. Step 4: Simplify right side
    255,340.12x = 40,375,389,679.80
  5. Step 5: Solve for x
    x = 40,375,389,679.80/255,340.12
  6. Step 6: Final answer
    x = 158,123.96

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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.