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Finding the Fourth Proportional to 303,344.80, 455,017.20 and 125,833.30

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Solution

The fourth proportional to 303,344.80, 455,017.20 and 125,833.30 is: 188,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,344.80 : 455,017.20 = 125,833.30 : x
  2. Step 2: Convert to fraction form
    303,344.80/455,017.20 = 125,833.30/x
  3. Step 3: Cross multiply
    303,344.80x = 455,017.20 × 125,833.30
  4. Step 4: Simplify right side
    303,344.80x = 57,256,315,832.76
  5. Step 5: Solve for x
    x = 57,256,315,832.76/303,344.80
  6. Step 6: Final answer
    x = 188,749.95

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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.