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Finding the Fourth Proportional to 306,044.55, 428,905.26 and 306,044.55

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Solution

The fourth proportional to 306,044.55, 428,905.26 and 306,044.55 is: 428,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,044.55 : 428,905.26 = 306,044.55 : x
  2. Step 2: Convert to fraction form
    306,044.55/428,905.26 = 306,044.55/x
  3. Step 3: Cross multiply
    306,044.55x = 428,905.26 × 306,044.55
  4. Step 4: Simplify right side
    306,044.55x = 131,264,117,289.33
  5. Step 5: Solve for x
    x = 131,264,117,289.33/306,044.55
  6. Step 6: Final answer
    x = 428,905.26

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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.