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Finding the Fourth Proportional to 357,179.37, 535,629.42 and 129,420.89

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Solution

The fourth proportional to 357,179.37, 535,629.42 and 129,420.89 is: 194,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,179.37 : 535,629.42 = 129,420.89 : x
  2. Step 2: Convert to fraction form
    357,179.37/535,629.42 = 129,420.89/x
  3. Step 3: Cross multiply
    357,179.37x = 535,629.42 × 129,420.89
  4. Step 4: Simplify right side
    357,179.37x = 69,321,633,568.44
  5. Step 5: Solve for x
    x = 69,321,633,568.44/357,179.37
  6. Step 6: Final answer
    x = 194,080.73

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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.