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Finding the Fourth Proportional to 353,419.80, 528,963.30 and 274,104.60

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Solution

The fourth proportional to 353,419.80, 528,963.30 and 274,104.60 is: 410,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,419.80 : 528,963.30 = 274,104.60 : x
  2. Step 2: Convert to fraction form
    353,419.80/528,963.30 = 274,104.60/x
  3. Step 3: Cross multiply
    353,419.80x = 528,963.30 × 274,104.60
  4. Step 4: Simplify right side
    353,419.80x = 144,991,273,761.18
  5. Step 5: Solve for x
    x = 144,991,273,761.18/353,419.80
  6. Step 6: Final answer
    x = 410,252.27

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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.