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Finding the Fourth Proportional to 543,722.90, 815,195.55 and 243,958.10

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Solution

The fourth proportional to 543,722.90, 815,195.55 and 243,958.10 is: 365,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,722.90 : 815,195.55 = 243,958.10 : x
  2. Step 2: Convert to fraction form
    543,722.90/815,195.55 = 243,958.10/x
  3. Step 3: Cross multiply
    543,722.90x = 815,195.55 × 243,958.10
  4. Step 4: Simplify right side
    543,722.90x = 198,873,557,506.46
  5. Step 5: Solve for x
    x = 198,873,557,506.46/543,722.90
  6. Step 6: Final answer
    x = 365,762.70

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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.