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Finding the Fourth Proportional to 306,046.80, 428,908.41 and 306,046.80

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Solution

The fourth proportional to 306,046.80, 428,908.41 and 306,046.80 is: 428,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,046.80 : 428,908.41 = 306,046.80 : x
  2. Step 2: Convert to fraction form
    306,046.80/428,908.41 = 306,046.80/x
  3. Step 3: Cross multiply
    306,046.80x = 428,908.41 × 306,046.80
  4. Step 4: Simplify right side
    306,046.80x = 131,266,046,373.59
  5. Step 5: Solve for x
    x = 131,266,046,373.59/306,046.80
  6. Step 6: Final answer
    x = 428,908.41

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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.