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Finding the Fourth Proportional to 303,386.40, 455,043.15 and 125,874.90

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Solution

The fourth proportional to 303,386.40, 455,043.15 and 125,874.90 is: 188,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,386.40 : 455,043.15 = 125,874.90 : x
  2. Step 2: Convert to fraction form
    303,386.40/455,043.15 = 125,874.90/x
  3. Step 3: Cross multiply
    303,386.40x = 455,043.15 × 125,874.90
  4. Step 4: Simplify right side
    303,386.40x = 57,278,511,001.94
  5. Step 5: Solve for x
    x = 57,278,511,001.94/303,386.40
  6. Step 6: Final answer
    x = 188,797.23

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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.