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Finding the Fourth Proportional to 353,628.76, 488,049.19 and 198,605.47

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Solution

The fourth proportional to 353,628.76, 488,049.19 and 198,605.47 is: 274,098.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,628.76 : 488,049.19 = 198,605.47 : x
  2. Step 2: Convert to fraction form
    353,628.76/488,049.19 = 198,605.47/x
  3. Step 3: Cross multiply
    353,628.76x = 488,049.19 × 198,605.47
  4. Step 4: Simplify right side
    353,628.76x = 96,929,238,763.07
  5. Step 5: Solve for x
    x = 96,929,238,763.07/353,628.76
  6. Step 6: Final answer
    x = 274,098.86

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1.5x scale

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.