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Finding the Fourth Proportional to 203,509.40, 280,860.22 and 112,894.56

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Solution

The fourth proportional to 203,509.40, 280,860.22 and 112,894.56 is: 155,804.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,509.40 : 280,860.22 = 112,894.56 : x
  2. Step 2: Convert to fraction form
    203,509.40/280,860.22 = 112,894.56/x
  3. Step 3: Cross multiply
    203,509.40x = 280,860.22 × 112,894.56
  4. Step 4: Simplify right side
    203,509.40x = 31,707,590,958.40
  5. Step 5: Solve for x
    x = 31,707,590,958.40/203,509.40
  6. Step 6: Final answer
    x = 155,804.06

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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.