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Finding the Fourth Proportional to 359,139.82, 495,616.16 and 198,000.58

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Solution

The fourth proportional to 359,139.82, 495,616.16 and 198,000.58 is: 273,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,139.82 : 495,616.16 = 198,000.58 : x
  2. Step 2: Convert to fraction form
    359,139.82/495,616.16 = 198,000.58/x
  3. Step 3: Cross multiply
    359,139.82x = 495,616.16 × 198,000.58
  4. Step 4: Simplify right side
    359,139.82x = 98,132,287,137.37
  5. Step 5: Solve for x
    x = 98,132,287,137.37/359,139.82
  6. Step 6: Final answer
    x = 273,242.57

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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.