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Finding the Fourth Proportional to 253,800.97, 380,668.03 and 120,765.76

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Solution

The fourth proportional to 253,800.97, 380,668.03 and 120,765.76 is: 181,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,800.97 : 380,668.03 = 120,765.76 : x
  2. Step 2: Convert to fraction form
    253,800.97/380,668.03 = 120,765.76/x
  3. Step 3: Cross multiply
    253,800.97x = 380,668.03 × 120,765.76
  4. Step 4: Simplify right side
    253,800.97x = 45,971,662,697.07
  5. Step 5: Solve for x
    x = 45,971,662,697.07/253,800.97
  6. Step 6: Final answer
    x = 181,132.73

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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.