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Finding the Fourth Proportional to 352,556.38, 527,665.11 and 321,039.28

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Solution

The fourth proportional to 352,556.38, 527,665.11 and 321,039.28 is: 480,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,556.38 : 527,665.11 = 321,039.28 : x
  2. Step 2: Convert to fraction form
    352,556.38/527,665.11 = 321,039.28/x
  3. Step 3: Cross multiply
    352,556.38x = 527,665.11 × 321,039.28
  4. Step 4: Simplify right side
    352,556.38x = 169,401,226,995.52
  5. Step 5: Solve for x
    x = 169,401,226,995.52/352,556.38
  6. Step 6: Final answer
    x = 480,494.00

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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.