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Finding the Fourth Proportional to 306,046.55, 428,908.04 and 306,046.55

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Solution

The fourth proportional to 306,046.55, 428,908.04 and 306,046.55 is: 428,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,046.55 : 428,908.04 = 306,046.55 : x
  2. Step 2: Convert to fraction form
    306,046.55/428,908.04 = 306,046.55/x
  3. Step 3: Cross multiply
    306,046.55x = 428,908.04 × 306,046.55
  4. Step 4: Simplify right side
    306,046.55x = 131,265,825,909.26
  5. Step 5: Solve for x
    x = 131,265,825,909.26/306,046.55
  6. Step 6: Final answer
    x = 428,908.04

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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.