Home / 345,218.80-517,164.78-211,709.74

Finding the Fourth Proportional to 345,218.80, 517,164.78 and 211,709.74

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Solution

The fourth proportional to 345,218.80, 517,164.78 and 211,709.74 is: 317,157.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,218.80 : 517,164.78 = 211,709.74 : x
  2. Step 2: Convert to fraction form
    345,218.80/517,164.78 = 211,709.74/x
  3. Step 3: Cross multiply
    345,218.80x = 517,164.78 × 211,709.74
  4. Step 4: Simplify right side
    345,218.80x = 109,488,821,110.96
  5. Step 5: Solve for x
    x = 109,488,821,110.96/345,218.80
  6. Step 6: Final answer
    x = 317,157.76

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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.