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Finding the Fourth Proportional to 359,283.80, 495,815.18 and 198,145.40

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Solution

The fourth proportional to 359,283.80, 495,815.18 and 198,145.40 is: 273,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,283.80 : 495,815.18 = 198,145.40 : x
  2. Step 2: Convert to fraction form
    359,283.80/495,815.18 = 198,145.40/x
  3. Step 3: Cross multiply
    359,283.80x = 495,815.18 × 198,145.40
  4. Step 4: Simplify right side
    359,283.80x = 98,243,497,167.17
  5. Step 5: Solve for x
    x = 98,243,497,167.17/359,283.80
  6. Step 6: Final answer
    x = 273,442.60

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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.