Home / 318,118.86-477,182.07-81,455.22

Finding the Fourth Proportional to 318,118.86, 477,182.07 and 81,455.22

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Solution

The fourth proportional to 318,118.86, 477,182.07 and 81,455.22 is: 122,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,118.86 : 477,182.07 = 81,455.22 : x
  2. Step 2: Convert to fraction form
    318,118.86/477,182.07 = 81,455.22/x
  3. Step 3: Cross multiply
    318,118.86x = 477,182.07 × 81,455.22
  4. Step 4: Simplify right side
    318,118.86x = 38,868,970,491.91
  5. Step 5: Solve for x
    x = 38,868,970,491.91/318,118.86
  6. Step 6: Final answer
    x = 122,183.80

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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.