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Finding the Fourth Proportional to 437,627.60, 656,441.40 and 288,069.20

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Solution

The fourth proportional to 437,627.60, 656,441.40 and 288,069.20 is: 432,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,627.60 : 656,441.40 = 288,069.20 : x
  2. Step 2: Convert to fraction form
    437,627.60/656,441.40 = 288,069.20/x
  3. Step 3: Cross multiply
    437,627.60x = 656,441.40 × 288,069.20
  4. Step 4: Simplify right side
    437,627.60x = 189,100,548,944.88
  5. Step 5: Solve for x
    x = 189,100,548,944.88/437,627.60
  6. Step 6: Final answer
    x = 432,103.80

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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.