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Finding the Fourth Proportional to 439,635.60, 659,453.40 and 203,439.60

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Solution

The fourth proportional to 439,635.60, 659,453.40 and 203,439.60 is: 305,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,635.60 : 659,453.40 = 203,439.60 : x
  2. Step 2: Convert to fraction form
    439,635.60/659,453.40 = 203,439.60/x
  3. Step 3: Cross multiply
    439,635.60x = 659,453.40 × 203,439.60
  4. Step 4: Simplify right side
    439,635.60x = 134,158,935,914.64
  5. Step 5: Solve for x
    x = 134,158,935,914.64/439,635.60
  6. Step 6: Final answer
    x = 305,159.40

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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.