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Finding the Fourth Proportional to 351,397.07, 484,890.72 and 198,426

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Solution

The fourth proportional to 351,397.07, 484,890.72 and 198,426 is: 273,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,397.07 : 484,890.72 = 198,426 : x
  2. Step 2: Convert to fraction form
    351,397.07/484,890.72 = 198,426/x
  3. Step 3: Cross multiply
    351,397.07x = 484,890.72 × 198,426
  4. Step 4: Simplify right side
    351,397.07x = 96,214,926,006.72
  5. Step 5: Solve for x
    x = 96,214,926,006.72/351,397.07
  6. Step 6: Final answer
    x = 273,806.86

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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.