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Finding the Fourth Proportional to 304,636.60, 420,489.62 and 197,213.88

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Solution

The fourth proportional to 304,636.60, 420,489.62 and 197,213.88 is: 272,214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,636.60 : 420,489.62 = 197,213.88 : x
  2. Step 2: Convert to fraction form
    304,636.60/420,489.62 = 197,213.88/x
  3. Step 3: Cross multiply
    304,636.60x = 420,489.62 × 197,213.88
  4. Step 4: Simplify right side
    304,636.60x = 82,926,389,459.93
  5. Step 5: Solve for x
    x = 82,926,389,459.93/304,636.60
  6. Step 6: Final answer
    x = 272,214.14

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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.