Home / 380,819.60-570,682.20-214,255.76

Finding the Fourth Proportional to 380,819.60, 570,682.20 and 214,255.76

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Solution

The fourth proportional to 380,819.60, 570,682.20 and 214,255.76 is: 321,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,819.60 : 570,682.20 = 214,255.76 : x
  2. Step 2: Convert to fraction form
    380,819.60/570,682.20 = 214,255.76/x
  3. Step 3: Cross multiply
    380,819.60x = 570,682.20 × 214,255.76
  4. Step 4: Simplify right side
    380,819.60x = 122,271,948,479.47
  5. Step 5: Solve for x
    x = 122,271,948,479.47/380,819.60
  6. Step 6: Final answer
    x = 321,075.78

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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.