Home / 317,815.22-476,722.20-81,158.06

Finding the Fourth Proportional to 317,815.22, 476,722.20 and 81,158.06

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Solution

The fourth proportional to 317,815.22, 476,722.20 and 81,158.06 is: 121,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,815.22 : 476,722.20 = 81,158.06 : x
  2. Step 2: Convert to fraction form
    317,815.22/476,722.20 = 81,158.06/x
  3. Step 3: Cross multiply
    317,815.22x = 476,722.20 × 81,158.06
  4. Step 4: Simplify right side
    317,815.22x = 38,689,848,910.93
  5. Step 5: Solve for x
    x = 38,689,848,910.93/317,815.22
  6. Step 6: Final answer
    x = 121,736.93

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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.