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Finding the Fourth Proportional to 303,517.71, 455,279.40 and 134,992.35

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Solution

The fourth proportional to 303,517.71, 455,279.40 and 134,992.35 is: 202,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,517.71 : 455,279.40 = 134,992.35 : x
  2. Step 2: Convert to fraction form
    303,517.71/455,279.40 = 134,992.35/x
  3. Step 3: Cross multiply
    303,517.71x = 455,279.40 × 134,992.35
  4. Step 4: Simplify right side
    303,517.71x = 61,459,236,112.59
  5. Step 5: Solve for x
    x = 61,459,236,112.59/303,517.71
  6. Step 6: Final answer
    x = 202,489.79

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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.