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Finding the Fourth Proportional to 203,117.67, 280,298.94 and 112,471.71

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Solution

The fourth proportional to 203,117.67, 280,298.94 and 112,471.71 is: 155,209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,117.67 : 280,298.94 = 112,471.71 : x
  2. Step 2: Convert to fraction form
    203,117.67/280,298.94 = 112,471.71/x
  3. Step 3: Cross multiply
    203,117.67x = 280,298.94 × 112,471.71
  4. Step 4: Simplify right side
    203,117.67x = 31,525,701,092.99
  5. Step 5: Solve for x
    x = 31,525,701,092.99/203,117.67
  6. Step 6: Final answer
    x = 155,209.05

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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.