Home / 211,479.57-317,290.41-78,370.56

Finding the Fourth Proportional to 211,479.57, 317,290.41 and 78,370.56

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Solution

The fourth proportional to 211,479.57, 317,290.41 and 78,370.56 is: 117,582.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,479.57 : 317,290.41 = 78,370.56 : x
  2. Step 2: Convert to fraction form
    211,479.57/317,290.41 = 78,370.56/x
  3. Step 3: Cross multiply
    211,479.57x = 317,290.41 × 78,370.56
  4. Step 4: Simplify right side
    211,479.57x = 24,866,227,114.33
  5. Step 5: Solve for x
    x = 24,866,227,114.33/211,479.57
  6. Step 6: Final answer
    x = 117,582.17

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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.