Home / 211,522.12-317,080.92-78,366.64

Finding the Fourth Proportional to 211,522.12, 317,080.92 and 78,366.64

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Solution

The fourth proportional to 211,522.12, 317,080.92 and 78,366.64 is: 117,475.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,522.12 : 317,080.92 = 78,366.64 : x
  2. Step 2: Convert to fraction form
    211,522.12/317,080.92 = 78,366.64/x
  3. Step 3: Cross multiply
    211,522.12x = 317,080.92 × 78,366.64
  4. Step 4: Simplify right side
    211,522.12x = 24,848,566,308.51
  5. Step 5: Solve for x
    x = 24,848,566,308.51/211,522.12
  6. Step 6: Final answer
    x = 117,475.02

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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.