Home / 303,375.12-455,059.04-78,715.55

Finding the Fourth Proportional to 303,375.12, 455,059.04 and 78,715.55

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Solution

The fourth proportional to 303,375.12, 455,059.04 and 78,715.55 is: 118,072.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,375.12 : 455,059.04 = 78,715.55 : x
  2. Step 2: Convert to fraction form
    303,375.12/455,059.04 = 78,715.55/x
  3. Step 3: Cross multiply
    303,375.12x = 455,059.04 × 78,715.55
  4. Step 4: Simplify right side
    303,375.12x = 35,820,219,947.20
  5. Step 5: Solve for x
    x = 35,820,219,947.20/303,375.12
  6. Step 6: Final answer
    x = 118,072.37

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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.