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Finding the Fourth Proportional to 543,980.80, 815,139.60 and 365,828.32

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Solution

The fourth proportional to 543,980.80, 815,139.60 and 365,828.32 is: 548,183.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,980.80 : 815,139.60 = 365,828.32 : x
  2. Step 2: Convert to fraction form
    543,980.80/815,139.60 = 365,828.32/x
  3. Step 3: Cross multiply
    543,980.80x = 815,139.60 × 365,828.32
  4. Step 4: Simplify right side
    543,980.80x = 298,201,150,433.47
  5. Step 5: Solve for x
    x = 298,201,150,433.47/543,980.80
  6. Step 6: Final answer
    x = 548,183.23

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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.