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Finding the Fourth Proportional to 330,691.42, 496,257.72 and 212,447.62

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Solution

The fourth proportional to 330,691.42, 496,257.72 and 212,447.62 is: 318,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,691.42 : 496,257.72 = 212,447.62 : x
  2. Step 2: Convert to fraction form
    330,691.42/496,257.72 = 212,447.62/x
  3. Step 3: Cross multiply
    330,691.42x = 496,257.72 × 212,447.62
  4. Step 4: Simplify right side
    330,691.42x = 105,428,771,520.63
  5. Step 5: Solve for x
    x = 105,428,771,520.63/330,691.42
  6. Step 6: Final answer
    x = 318,813.14

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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.