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Finding the Fourth Proportional to 445,203.64, 668,024.70 and 208,505.44

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Solution

The fourth proportional to 445,203.64, 668,024.70 and 208,505.44 is: 312,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,203.64 : 668,024.70 = 208,505.44 : x
  2. Step 2: Convert to fraction form
    445,203.64/668,024.70 = 208,505.44/x
  3. Step 3: Cross multiply
    445,203.64x = 668,024.70 × 208,505.44
  4. Step 4: Simplify right side
    445,203.64x = 139,286,784,004.37
  5. Step 5: Solve for x
    x = 139,286,784,004.37/445,203.64
  6. Step 6: Final answer
    x = 312,860.84

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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.