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Finding the Fourth Proportional to 359,128.54, 495,600.60 and 197,989.28

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Solution

The fourth proportional to 359,128.54, 495,600.60 and 197,989.28 is: 273,226.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,128.54 : 495,600.60 = 197,989.28 : x
  2. Step 2: Convert to fraction form
    359,128.54/495,600.60 = 197,989.28/x
  3. Step 3: Cross multiply
    359,128.54x = 495,600.60 × 197,989.28
  4. Step 4: Simplify right side
    359,128.54x = 98,123,605,961.57
  5. Step 5: Solve for x
    x = 98,123,605,961.57/359,128.54
  6. Step 6: Final answer
    x = 273,226.98

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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.