Home / 211,814.42-317,720.94-76,878.31

Finding the Fourth Proportional to 211,814.42, 317,720.94 and 76,878.31

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Solution

The fourth proportional to 211,814.42, 317,720.94 and 76,878.31 is: 115,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,814.42 : 317,720.94 = 76,878.31 : x
  2. Step 2: Convert to fraction form
    211,814.42/317,720.94 = 76,878.31/x
  3. Step 3: Cross multiply
    211,814.42x = 317,720.94 × 76,878.31
  4. Step 4: Simplify right side
    211,814.42x = 24,425,847,740.12
  5. Step 5: Solve for x
    x = 24,425,847,740.12/211,814.42
  6. Step 6: Final answer
    x = 115,317.21

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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.