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Finding the Fourth Proportional to 543,627.70, 815,118.48 and 206,693.01

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Solution

The fourth proportional to 543,627.70, 815,118.48 and 206,693.01 is: 309,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,627.70 : 815,118.48 = 206,693.01 : x
  2. Step 2: Convert to fraction form
    543,627.70/815,118.48 = 206,693.01/x
  3. Step 3: Cross multiply
    543,627.70x = 815,118.48 × 206,693.01
  4. Step 4: Simplify right side
    543,627.70x = 168,479,292,137.83
  5. Step 5: Solve for x
    x = 168,479,292,137.83/543,627.70
  6. Step 6: Final answer
    x = 309,916.68

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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.