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Finding the Fourth Proportional to 360,311.09, 540,282.93 and 120,338.60

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Solution

The fourth proportional to 360,311.09, 540,282.93 and 120,338.60 is: 180,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,311.09 : 540,282.93 = 120,338.60 : x
  2. Step 2: Convert to fraction form
    360,311.09/540,282.93 = 120,338.60/x
  3. Step 3: Cross multiply
    360,311.09x = 540,282.93 × 120,338.60
  4. Step 4: Simplify right side
    360,311.09x = 65,016,888,247.41
  5. Step 5: Solve for x
    x = 65,016,888,247.41/360,311.09
  6. Step 6: Final answer
    x = 180,446.54

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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.