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Finding the Fourth Proportional to 550,383.59, 759,528.03 and 305,405.57

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Solution

The fourth proportional to 550,383.59, 759,528.03 and 305,405.57 is: 421,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,383.59 : 759,528.03 = 305,405.57 : x
  2. Step 2: Convert to fraction form
    550,383.59/759,528.03 = 305,405.57/x
  3. Step 3: Cross multiply
    550,383.59x = 759,528.03 × 305,405.57
  4. Step 4: Simplify right side
    550,383.59x = 231,964,087,135.49
  5. Step 5: Solve for x
    x = 231,964,087,135.49/550,383.59
  6. Step 6: Final answer
    x = 421,458.95

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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.