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Finding the Fourth Proportional to 539,494.40, 809,047.20 and 273,166.40

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Solution

The fourth proportional to 539,494.40, 809,047.20 and 273,166.40 is: 409,651.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,494.40 : 809,047.20 = 273,166.40 : x
  2. Step 2: Convert to fraction form
    539,494.40/809,047.20 = 273,166.40/x
  3. Step 3: Cross multiply
    539,494.40x = 809,047.20 × 273,166.40
  4. Step 4: Simplify right side
    539,494.40x = 221,004,511,054.08
  5. Step 5: Solve for x
    x = 221,004,511,054.08/539,494.40
  6. Step 6: Final answer
    x = 409,651.17

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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.