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Finding the Fourth Proportional to 359,277.60, 495,793.30 and 198,129.72

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Solution

The fourth proportional to 359,277.60, 495,793.30 and 198,129.72 is: 273,413.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,277.60 : 495,793.30 = 198,129.72 : x
  2. Step 2: Convert to fraction form
    359,277.60/495,793.30 = 198,129.72/x
  3. Step 3: Cross multiply
    359,277.60x = 495,793.30 × 198,129.72
  4. Step 4: Simplify right side
    359,277.60x = 98,231,387,706.88
  5. Step 5: Solve for x
    x = 98,231,387,706.88/359,277.60
  6. Step 6: Final answer
    x = 273,413.62

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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.