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Finding the Fourth Proportional to 303,335.70, 455,003.55 and 191,142.60

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Solution

The fourth proportional to 303,335.70, 455,003.55 and 191,142.60 is: 286,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,335.70 : 455,003.55 = 191,142.60 : x
  2. Step 2: Convert to fraction form
    303,335.70/455,003.55 = 191,142.60/x
  3. Step 3: Cross multiply
    303,335.70x = 455,003.55 × 191,142.60
  4. Step 4: Simplify right side
    303,335.70x = 86,970,561,556.23
  5. Step 5: Solve for x
    x = 86,970,561,556.23/303,335.70
  6. Step 6: Final answer
    x = 286,713.90

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1.5x scale

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.