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Finding the Fourth Proportional to 539,064.60, 809,115.30 and 273,125.40

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Solution

The fourth proportional to 539,064.60, 809,115.30 and 273,125.40 is: 409,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,064.60 : 809,115.30 = 273,125.40 : x
  2. Step 2: Convert to fraction form
    539,064.60/809,115.30 = 273,125.40/x
  3. Step 3: Cross multiply
    539,064.60x = 809,115.30 × 273,125.40
  4. Step 4: Simplify right side
    539,064.60x = 220,989,939,958.62
  5. Step 5: Solve for x
    x = 220,989,939,958.62/539,064.60
  6. Step 6: Final answer
    x = 409,950.76

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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.