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Finding the Fourth Proportional to 203,418.99, 280,734.75 and 112,803.35

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Solution

The fourth proportional to 203,418.99, 280,734.75 and 112,803.35 is: 155,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,418.99 : 280,734.75 = 112,803.35 : x
  2. Step 2: Convert to fraction form
    203,418.99/280,734.75 = 112,803.35/x
  3. Step 3: Cross multiply
    203,418.99x = 280,734.75 × 112,803.35
  4. Step 4: Simplify right side
    203,418.99x = 31,667,818,857.74
  5. Step 5: Solve for x
    x = 31,667,818,857.74/203,418.99
  6. Step 6: Final answer
    x = 155,677.79

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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.