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Finding the Fourth Proportional to 359,270.74, 495,786.72 and 198,140.68

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Solution

The fourth proportional to 359,270.74, 495,786.72 and 198,140.68 is: 273,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,270.74 : 495,786.72 = 198,140.68 : x
  2. Step 2: Convert to fraction form
    359,270.74/495,786.72 = 198,140.68/x
  3. Step 3: Cross multiply
    359,270.74x = 495,786.72 × 198,140.68
  4. Step 4: Simplify right side
    359,270.74x = 98,235,517,835.77
  5. Step 5: Solve for x
    x = 98,235,517,835.77/359,270.74
  6. Step 6: Final answer
    x = 273,430.33

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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.