Home / 211,819.86-317,720.07-71,579.70

Finding the Fourth Proportional to 211,819.86, 317,720.07 and 71,579.70

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Solution

The fourth proportional to 211,819.86, 317,720.07 and 71,579.70 is: 107,366.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,819.86 : 317,720.07 = 71,579.70 : x
  2. Step 2: Convert to fraction form
    211,819.86/317,720.07 = 71,579.70/x
  3. Step 3: Cross multiply
    211,819.86x = 317,720.07 × 71,579.70
  4. Step 4: Simplify right side
    211,819.86x = 22,742,307,294.58
  5. Step 5: Solve for x
    x = 22,742,307,294.58/211,819.86
  6. Step 6: Final answer
    x = 107,366.27

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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.