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Finding the Fourth Proportional to 330,067.64, 455,494.88 and 186,855.42

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Solution

The fourth proportional to 330,067.64, 455,494.88 and 186,855.42 is: 257,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,067.64 : 455,494.88 = 186,855.42 : x
  2. Step 2: Convert to fraction form
    330,067.64/455,494.88 = 186,855.42/x
  3. Step 3: Cross multiply
    330,067.64x = 455,494.88 × 186,855.42
  4. Step 4: Simplify right side
    330,067.64x = 85,111,687,110.25
  5. Step 5: Solve for x
    x = 85,111,687,110.25/330,067.64
  6. Step 6: Final answer
    x = 257,861.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.