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Finding the Fourth Proportional to 543,792.09, 815,688.48 and 206,754.90

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Solution

The fourth proportional to 543,792.09, 815,688.48 and 206,754.90 is: 310,132.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,792.09 : 815,688.48 = 206,754.90 : x
  2. Step 2: Convert to fraction form
    543,792.09/815,688.48 = 206,754.90/x
  3. Step 3: Cross multiply
    543,792.09x = 815,688.48 × 206,754.90
  4. Step 4: Simplify right side
    543,792.09x = 168,647,587,830.05
  5. Step 5: Solve for x
    x = 168,647,587,830.05/543,792.09
  6. Step 6: Final answer
    x = 310,132.47

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1.5x scale

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.