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Finding the Fourth Proportional to 330,069.60, 494,715.60 and 140,529.60

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Solution

The fourth proportional to 330,069.60, 494,715.60 and 140,529.60 is: 210,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,069.60 : 494,715.60 = 140,529.60 : x
  2. Step 2: Convert to fraction form
    330,069.60/494,715.60 = 140,529.60/x
  3. Step 3: Cross multiply
    330,069.60x = 494,715.60 × 140,529.60
  4. Step 4: Simplify right side
    330,069.60x = 69,522,185,381.76
  5. Step 5: Solve for x
    x = 69,522,185,381.76/330,069.60
  6. Step 6: Final answer
    x = 210,628.87

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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.