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Finding the Fourth Proportional to 539,059.60, 809,107.80 and 273,120.40

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Solution

The fourth proportional to 539,059.60, 809,107.80 and 273,120.40 is: 409,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,059.60 : 809,107.80 = 273,120.40 : x
  2. Step 2: Convert to fraction form
    539,059.60/809,107.80 = 273,120.40/x
  3. Step 3: Cross multiply
    539,059.60x = 809,107.80 × 273,120.40
  4. Step 4: Simplify right side
    539,059.60x = 220,983,845,979.12
  5. Step 5: Solve for x
    x = 220,983,845,979.12/539,059.60
  6. Step 6: Final answer
    x = 409,943.25

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1.5x scale

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.