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Finding the Fourth Proportional to 203,484.77, 280,785.77 and 112,817.82

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Solution

The fourth proportional to 203,484.77, 280,785.77 and 112,817.82 is: 155,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,484.77 : 280,785.77 = 112,817.82 : x
  2. Step 2: Convert to fraction form
    203,484.77/280,785.77 = 112,817.82/x
  3. Step 3: Cross multiply
    203,484.77x = 280,785.77 × 112,817.82
  4. Step 4: Simplify right side
    203,484.77x = 31,677,639,370.35
  5. Step 5: Solve for x
    x = 31,677,639,370.35/203,484.77
  6. Step 6: Final answer
    x = 155,675.73

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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.