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Finding the Fourth Proportional to 361,980.66, 499,523.76 and 198,636.66

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Solution

The fourth proportional to 361,980.66, 499,523.76 and 198,636.66 is: 274,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,980.66 : 499,523.76 = 198,636.66 : x
  2. Step 2: Convert to fraction form
    361,980.66/499,523.76 = 198,636.66/x
  3. Step 3: Cross multiply
    361,980.66x = 499,523.76 × 198,636.66
  4. Step 4: Simplify right side
    361,980.66x = 99,223,731,277.04
  5. Step 5: Solve for x
    x = 99,223,731,277.04/361,980.66
  6. Step 6: Final answer
    x = 274,113.35

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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.