Home / 255,931.86-383,920.83-68,939.22

Finding the Fourth Proportional to 255,931.86, 383,920.83 and 68,939.22

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Solution

The fourth proportional to 255,931.86, 383,920.83 and 68,939.22 is: 103,415.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,931.86 : 383,920.83 = 68,939.22 : x
  2. Step 2: Convert to fraction form
    255,931.86/383,920.83 = 68,939.22/x
  3. Step 3: Cross multiply
    255,931.86x = 383,920.83 × 68,939.22
  4. Step 4: Simplify right side
    255,931.86x = 26,467,202,561.95
  5. Step 5: Solve for x
    x = 26,467,202,561.95/255,931.86
  6. Step 6: Final answer
    x = 103,415.04

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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.