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Finding the Fourth Proportional to 203,505.37, 280,818.86 and 112,861.06

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Solution

The fourth proportional to 203,505.37, 280,818.86 and 112,861.06 is: 155,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,505.37 : 280,818.86 = 112,861.06 : x
  2. Step 2: Convert to fraction form
    203,505.37/280,818.86 = 112,861.06/x
  3. Step 3: Cross multiply
    203,505.37x = 280,818.86 × 112,861.06
  4. Step 4: Simplify right side
    203,505.37x = 31,693,514,207.59
  5. Step 5: Solve for x
    x = 31,693,514,207.59/203,505.37
  6. Step 6: Final answer
    x = 155,737.97

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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.