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Finding the Fourth Proportional to 203,465.55, 280,785.83 and 112,825.34

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Solution

The fourth proportional to 203,465.55, 280,785.83 and 112,825.34 is: 155,700.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,465.55 : 280,785.83 = 112,825.34 : x
  2. Step 2: Convert to fraction form
    203,465.55/280,785.83 = 112,825.34/x
  3. Step 3: Cross multiply
    203,465.55x = 280,785.83 × 112,825.34
  4. Step 4: Simplify right side
    203,465.55x = 31,679,754,768.88
  5. Step 5: Solve for x
    x = 31,679,754,768.88/203,465.55
  6. Step 6: Final answer
    x = 155,700.83

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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.