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Finding the Fourth Proportional to 543,357.03, 815,009.25 and 206,371.38

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Solution

The fourth proportional to 543,357.03, 815,009.25 and 206,371.38 is: 309,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,357.03 : 815,009.25 = 206,371.38 : x
  2. Step 2: Convert to fraction form
    543,357.03/815,009.25 = 206,371.38/x
  3. Step 3: Cross multiply
    543,357.03x = 815,009.25 × 206,371.38
  4. Step 4: Simplify right side
    543,357.03x = 168,194,583,635.27
  5. Step 5: Solve for x
    x = 168,194,583,635.27/543,357.03
  6. Step 6: Final answer
    x = 309,547.08

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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.