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Finding the Fourth Proportional to 306,034.20, 428,797.80 and 306,034.20

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Solution

The fourth proportional to 306,034.20, 428,797.80 and 306,034.20 is: 428,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,034.20 : 428,797.80 = 306,034.20 : x
  2. Step 2: Convert to fraction form
    306,034.20/428,797.80 = 306,034.20/x
  3. Step 3: Cross multiply
    306,034.20x = 428,797.80 × 306,034.20
  4. Step 4: Simplify right side
    306,034.20x = 131,226,791,684.76
  5. Step 5: Solve for x
    x = 131,226,791,684.76/306,034.20
  6. Step 6: Final answer
    x = 428,797.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.