Home / 280,629.92-421,110.94-103,261.48

Finding the Fourth Proportional to 280,629.92, 421,110.94 and 103,261.48

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Solution

The fourth proportional to 280,629.92, 421,110.94 and 103,261.48 is: 154,953.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629.92 : 421,110.94 = 103,261.48 : x
  2. Step 2: Convert to fraction form
    280,629.92/421,110.94 = 103,261.48/x
  3. Step 3: Cross multiply
    280,629.92x = 421,110.94 × 103,261.48
  4. Step 4: Simplify right side
    280,629.92x = 43,484,538,908.59
  5. Step 5: Solve for x
    x = 43,484,538,908.59/280,629.92
  6. Step 6: Final answer
    x = 154,953.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.