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Finding the Fourth Proportional to 359,276.60, 495,791.93 and 198,128.72

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Solution

The fourth proportional to 359,276.60, 495,791.93 and 198,128.72 is: 273,412.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,276.60 : 495,791.93 = 198,128.72 : x
  2. Step 2: Convert to fraction form
    359,276.60/495,791.93 = 198,128.72/x
  3. Step 3: Cross multiply
    359,276.60x = 495,791.93 × 198,128.72
  4. Step 4: Simplify right side
    359,276.60x = 98,230,617,007.63
  5. Step 5: Solve for x
    x = 98,230,617,007.63/359,276.60
  6. Step 6: Final answer
    x = 273,412.24

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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.