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Finding the Fourth Proportional to 303,342.80, 455,111.40 and 203,615.60

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Solution

The fourth proportional to 303,342.80, 455,111.40 and 203,615.60 is: 305,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,342.80 : 455,111.40 = 203,615.60 : x
  2. Step 2: Convert to fraction form
    303,342.80/455,111.40 = 203,615.60/x
  3. Step 3: Cross multiply
    303,342.80x = 455,111.40 × 203,615.60
  4. Step 4: Simplify right side
    303,342.80x = 92,667,780,777.84
  5. Step 5: Solve for x
    x = 92,667,780,777.84/303,342.80
  6. Step 6: Final answer
    x = 305,488.64

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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.