Home / 211,189.85-316,785.83-53,418.45

Finding the Fourth Proportional to 211,189.85, 316,785.83 and 53,418.45

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Solution

The fourth proportional to 211,189.85, 316,785.83 and 53,418.45 is: 80,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,189.85 : 316,785.83 = 53,418.45 : x
  2. Step 2: Convert to fraction form
    211,189.85/316,785.83 = 53,418.45/x
  3. Step 3: Cross multiply
    211,189.85x = 316,785.83 × 53,418.45
  4. Step 4: Simplify right side
    211,189.85x = 16,922,208,941.42
  5. Step 5: Solve for x
    x = 16,922,208,941.42/211,189.85
  6. Step 6: Final answer
    x = 80,127.95

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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.