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Finding the Fourth Proportional to 303,987.84, 455,735.56 and 126,627.60

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Solution

The fourth proportional to 303,987.84, 455,735.56 and 126,627.60 is: 189,838.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,987.84 : 455,735.56 = 126,627.60 : x
  2. Step 2: Convert to fraction form
    303,987.84/455,735.56 = 126,627.60/x
  3. Step 3: Cross multiply
    303,987.84x = 455,735.56 × 126,627.60
  4. Step 4: Simplify right side
    303,987.84x = 57,708,700,197.46
  5. Step 5: Solve for x
    x = 57,708,700,197.46/303,987.84
  6. Step 6: Final answer
    x = 189,838.84

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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.