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Finding the Fourth Proportional to 220,623.60, 330,935.40 and 154,268.40

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Solution

The fourth proportional to 220,623.60, 330,935.40 and 154,268.40 is: 231,402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,623.60 : 330,935.40 = 154,268.40 : x
  2. Step 2: Convert to fraction form
    220,623.60/330,935.40 = 154,268.40/x
  3. Step 3: Cross multiply
    220,623.60x = 330,935.40 × 154,268.40
  4. Step 4: Simplify right side
    220,623.60x = 51,052,874,661.36
  5. Step 5: Solve for x
    x = 51,052,874,661.36/220,623.60
  6. Step 6: Final answer
    x = 231,402.60

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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.