Home / 345,936.60-518,904.90-212,383.80

Finding the Fourth Proportional to 345,936.60, 518,904.90 and 212,383.80

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Solution

The fourth proportional to 345,936.60, 518,904.90 and 212,383.80 is: 318,575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,936.60 : 518,904.90 = 212,383.80 : x
  2. Step 2: Convert to fraction form
    345,936.60/518,904.90 = 212,383.80/x
  3. Step 3: Cross multiply
    345,936.60x = 518,904.90 × 212,383.80
  4. Step 4: Simplify right side
    345,936.60x = 110,206,994,500.62
  5. Step 5: Solve for x
    x = 110,206,994,500.62/345,936.60
  6. Step 6: Final answer
    x = 318,575.70

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1.5x scale

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.