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Finding the Fourth Proportional to 250,345.74, 345,361.32 and 221,694.60

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Solution

The fourth proportional to 250,345.74, 345,361.32 and 221,694.60 is: 305,836.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,345.74 : 345,361.32 = 221,694.60 : x
  2. Step 2: Convert to fraction form
    250,345.74/345,361.32 = 221,694.60/x
  3. Step 3: Cross multiply
    250,345.74x = 345,361.32 × 221,694.60
  4. Step 4: Simplify right side
    250,345.74x = 76,564,739,692.87
  5. Step 5: Solve for x
    x = 76,564,739,692.87/250,345.74
  6. Step 6: Final answer
    x = 305,836.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.