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Finding the Fourth Proportional to 359,201.94, 495,663.62 and 221,359.44

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Solution

The fourth proportional to 359,201.94, 495,663.62 and 221,359.44 is: 305,454.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,201.94 : 495,663.62 = 221,359.44 : x
  2. Step 2: Convert to fraction form
    359,201.94/495,663.62 = 221,359.44/x
  3. Step 3: Cross multiply
    359,201.94x = 495,663.62 × 221,359.44
  4. Step 4: Simplify right side
    359,201.94x = 109,719,821,351.57
  5. Step 5: Solve for x
    x = 109,719,821,351.57/359,201.94
  6. Step 6: Final answer
    x = 305,454.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.