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Finding the Fourth Proportional to 539,189.60, 809,302.80 and 273,250.40

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Solution

The fourth proportional to 539,189.60, 809,302.80 and 273,250.40 is: 410,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,189.60 : 809,302.80 = 273,250.40 : x
  2. Step 2: Convert to fraction form
    539,189.60/809,302.80 = 273,250.40/x
  3. Step 3: Cross multiply
    539,189.60x = 809,302.80 × 273,250.40
  4. Step 4: Simplify right side
    539,189.60x = 221,142,313,821.12
  5. Step 5: Solve for x
    x = 221,142,313,821.12/539,189.60
  6. Step 6: Final answer
    x = 410,138.31

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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.