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Finding the Fourth Proportional to 359,270.87, 495,786.89 and 198,140.81

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Solution

The fourth proportional to 359,270.87, 495,786.89 and 198,140.81 is: 273,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,270.87 : 495,786.89 = 198,140.81 : x
  2. Step 2: Convert to fraction form
    359,270.87/495,786.89 = 198,140.81/x
  3. Step 3: Cross multiply
    359,270.87x = 495,786.89 × 198,140.81
  4. Step 4: Simplify right side
    359,270.87x = 98,235,613,493.05
  5. Step 5: Solve for x
    x = 98,235,613,493.05/359,270.87
  6. Step 6: Final answer
    x = 273,430.50

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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.