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Finding the Fourth Proportional to 318,322.54, 477,553.02 and 105,099.76

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Solution

The fourth proportional to 318,322.54, 477,553.02 and 105,099.76 is: 157,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,322.54 : 477,553.02 = 105,099.76 : x
  2. Step 2: Convert to fraction form
    318,322.54/477,553.02 = 105,099.76/x
  3. Step 3: Cross multiply
    318,322.54x = 477,553.02 × 105,099.76
  4. Step 4: Simplify right side
    318,322.54x = 50,190,707,789.28
  5. Step 5: Solve for x
    x = 50,190,707,789.28/318,322.54
  6. Step 6: Final answer
    x = 157,672.49

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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.