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Finding the Fourth Proportional to 303,512.10, 455,268.15 and 145,659.30

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Solution

The fourth proportional to 303,512.10, 455,268.15 and 145,659.30 is: 218,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,512.10 : 455,268.15 = 145,659.30 : x
  2. Step 2: Convert to fraction form
    303,512.10/455,268.15 = 145,659.30/x
  3. Step 3: Cross multiply
    303,512.10x = 455,268.15 × 145,659.30
  4. Step 4: Simplify right side
    303,512.10x = 66,314,040,041.30
  5. Step 5: Solve for x
    x = 66,314,040,041.30/303,512.10
  6. Step 6: Final answer
    x = 218,488.95

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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.