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Finding the Fourth Proportional to 445,883.04, 668,889.84 and 209,249.64

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Solution

The fourth proportional to 445,883.04, 668,889.84 and 209,249.64 is: 313,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,883.04 : 668,889.84 = 209,249.64 : x
  2. Step 2: Convert to fraction form
    445,883.04/668,889.84 = 209,249.64/x
  3. Step 3: Cross multiply
    445,883.04x = 668,889.84 × 209,249.64
  4. Step 4: Simplify right side
    445,883.04x = 139,964,958,219.66
  5. Step 5: Solve for x
    x = 139,964,958,219.66/445,883.04
  6. Step 6: Final answer
    x = 313,905.10

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1.5x scale

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.