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Finding the Fourth Proportional to 253,697.58, 380,516.13 and 66,723.66

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Solution

The fourth proportional to 253,697.58, 380,516.13 and 66,723.66 is: 100,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,697.58 : 380,516.13 = 66,723.66 : x
  2. Step 2: Convert to fraction form
    253,697.58/380,516.13 = 66,723.66/x
  3. Step 3: Cross multiply
    253,697.58x = 380,516.13 × 66,723.66
  4. Step 4: Simplify right side
    253,697.58x = 25,389,428,882.64
  5. Step 5: Solve for x
    x = 25,389,428,882.64/253,697.58
  6. Step 6: Final answer
    x = 100,077.54

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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.