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Finding the Fourth Proportional to 306,446.80, 459,670.20 and 211,968.40

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Solution

The fourth proportional to 306,446.80, 459,670.20 and 211,968.40 is: 317,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,446.80 : 459,670.20 = 211,968.40 : x
  2. Step 2: Convert to fraction form
    306,446.80/459,670.20 = 211,968.40/x
  3. Step 3: Cross multiply
    306,446.80x = 459,670.20 × 211,968.40
  4. Step 4: Simplify right side
    306,446.80x = 97,435,556,821.68
  5. Step 5: Solve for x
    x = 97,435,556,821.68/306,446.80
  6. Step 6: Final answer
    x = 317,952.60

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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.