Home / 380,520.43-570,284.92-212,033.95

Finding the Fourth Proportional to 380,520.43, 570,284.92 and 212,033.95

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Solution

The fourth proportional to 380,520.43, 570,284.92 and 212,033.95 is: 317,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,520.43 : 570,284.92 = 212,033.95 : x
  2. Step 2: Convert to fraction form
    380,520.43/570,284.92 = 212,033.95/x
  3. Step 3: Cross multiply
    380,520.43x = 570,284.92 × 212,033.95
  4. Step 4: Simplify right side
    380,520.43x = 120,919,764,213.03
  5. Step 5: Solve for x
    x = 120,919,764,213.03/380,520.43
  6. Step 6: Final answer
    x = 317,774.70

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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.