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Finding the Fourth Proportional to 275,025.68, 412,538.90 and 75,347.80

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Solution

The fourth proportional to 275,025.68, 412,538.90 and 75,347.80 is: 113,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,025.68 : 412,538.90 = 75,347.80 : x
  2. Step 2: Convert to fraction form
    275,025.68/412,538.90 = 75,347.80/x
  3. Step 3: Cross multiply
    275,025.68x = 412,538.90 × 75,347.80
  4. Step 4: Simplify right side
    275,025.68x = 31,083,898,529.42
  5. Step 5: Solve for x
    x = 31,083,898,529.42/275,025.68
  6. Step 6: Final answer
    x = 113,021.80

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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.