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Finding the Fourth Proportional to 243,458.87, 364,692.38 and 198,639.95

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Solution

The fourth proportional to 243,458.87, 364,692.38 and 198,639.95 is: 297,555.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,458.87 : 364,692.38 = 198,639.95 : x
  2. Step 2: Convert to fraction form
    243,458.87/364,692.38 = 198,639.95/x
  3. Step 3: Cross multiply
    243,458.87x = 364,692.38 × 198,639.95
  4. Step 4: Simplify right side
    243,458.87x = 72,442,473,311.92
  5. Step 5: Solve for x
    x = 72,442,473,311.92/243,458.87
  6. Step 6: Final answer
    x = 297,555.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.