Home / 211,640.85-317,457.14-51,717.78

Finding the Fourth Proportional to 211,640.85, 317,457.14 and 51,717.78

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Solution

The fourth proportional to 211,640.85, 317,457.14 and 51,717.78 is: 77,575.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,640.85 : 317,457.14 = 51,717.78 : x
  2. Step 2: Convert to fraction form
    211,640.85/317,457.14 = 51,717.78/x
  3. Step 3: Cross multiply
    211,640.85x = 317,457.14 × 51,717.78
  4. Step 4: Simplify right side
    211,640.85x = 16,418,178,267.36
  5. Step 5: Solve for x
    x = 16,418,178,267.36/211,640.85
  6. Step 6: Final answer
    x = 77,575.66

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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.