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Finding the Fourth Proportional to 543,879.02, 815,695.46 and 206,799.40

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Solution

The fourth proportional to 543,879.02, 815,695.46 and 206,799.40 is: 310,152.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,879.02 : 815,695.46 = 206,799.40 : x
  2. Step 2: Convert to fraction form
    543,879.02/815,695.46 = 206,799.40/x
  3. Step 3: Cross multiply
    543,879.02x = 815,695.46 × 206,799.40
  4. Step 4: Simplify right side
    543,879.02x = 168,685,331,710.72
  5. Step 5: Solve for x
    x = 168,685,331,710.72/543,879.02
  6. Step 6: Final answer
    x = 310,152.31

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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.