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Finding the Fourth Proportional to 203,310.72, 280,568.80 and 113,886.72

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Solution

The fourth proportional to 203,310.72, 280,568.80 and 113,886.72 is: 157,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,310.72 : 280,568.80 = 113,886.72 : x
  2. Step 2: Convert to fraction form
    203,310.72/280,568.80 = 113,886.72/x
  3. Step 3: Cross multiply
    203,310.72x = 280,568.80 × 113,886.72
  4. Step 4: Simplify right side
    203,310.72x = 31,953,060,366.34
  5. Step 5: Solve for x
    x = 31,953,060,366.34/203,310.72
  6. Step 6: Final answer
    x = 157,163.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.