Home / 211,814.92-317,721.69-76,878.81

Finding the Fourth Proportional to 211,814.92, 317,721.69 and 76,878.81

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Solution

The fourth proportional to 211,814.92, 317,721.69 and 76,878.81 is: 115,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,814.92 : 317,721.69 = 76,878.81 : x
  2. Step 2: Convert to fraction form
    211,814.92/317,721.69 = 76,878.81/x
  3. Step 3: Cross multiply
    211,814.92x = 317,721.69 × 76,878.81
  4. Step 4: Simplify right side
    211,814.92x = 24,426,065,053.99
  5. Step 5: Solve for x
    x = 24,426,065,053.99/211,814.92
  6. Step 6: Final answer
    x = 115,317.96

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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.