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Finding the Fourth Proportional to 203,500.04, 280,811.49 and 112,855.71

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Solution

The fourth proportional to 203,500.04, 280,811.49 and 112,855.71 is: 155,730.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,500.04 : 280,811.49 = 112,855.71 : x
  2. Step 2: Convert to fraction form
    203,500.04/280,811.49 = 112,855.71/x
  3. Step 3: Cross multiply
    203,500.04x = 280,811.49 × 112,855.71
  4. Step 4: Simplify right side
    203,500.04x = 31,691,180,080.11
  5. Step 5: Solve for x
    x = 31,691,180,080.11/203,500.04
  6. Step 6: Final answer
    x = 155,730.59

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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.