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Finding the Fourth Proportional to 418,884.60, 628,333.83 and 202,617.64

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Solution

The fourth proportional to 418,884.60, 628,333.83 and 202,617.64 is: 303,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,884.60 : 628,333.83 = 202,617.64 : x
  2. Step 2: Convert to fraction form
    418,884.60/628,333.83 = 202,617.64/x
  3. Step 3: Cross multiply
    418,884.60x = 628,333.83 × 202,617.64
  4. Step 4: Simplify right side
    418,884.60x = 127,311,518,552.18
  5. Step 5: Solve for x
    x = 127,311,518,552.18/418,884.60
  6. Step 6: Final answer
    x = 303,929.81

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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.