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Finding the Fourth Proportional to 303,142.39, 454,588.49 and 103,478.87

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Solution

The fourth proportional to 303,142.39, 454,588.49 and 103,478.87 is: 155,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,142.39 : 454,588.49 = 103,478.87 : x
  2. Step 2: Convert to fraction form
    303,142.39/454,588.49 = 103,478.87/x
  3. Step 3: Cross multiply
    303,142.39x = 454,588.49 × 103,478.87
  4. Step 4: Simplify right side
    303,142.39x = 47,040,304,655.37
  5. Step 5: Solve for x
    x = 47,040,304,655.37/303,142.39
  6. Step 6: Final answer
    x = 155,175.61

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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.