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Finding the Fourth Proportional to 303,963.84, 455,906.88 and 126,437.76

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Solution

The fourth proportional to 303,963.84, 455,906.88 and 126,437.76 is: 189,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,963.84 : 455,906.88 = 126,437.76 : x
  2. Step 2: Convert to fraction form
    303,963.84/455,906.88 = 126,437.76/x
  3. Step 3: Cross multiply
    303,963.84x = 455,906.88 × 126,437.76
  4. Step 4: Simplify right side
    303,963.84x = 57,643,844,675.79
  5. Step 5: Solve for x
    x = 57,643,844,675.79/303,963.84
  6. Step 6: Final answer
    x = 189,640.47

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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.