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Finding the Fourth Proportional to 188,356.80, 282,753.90 and 108,458.40

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Solution

The fourth proportional to 188,356.80, 282,753.90 and 108,458.40 is: 162,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,356.80 : 282,753.90 = 108,458.40 : x
  2. Step 2: Convert to fraction form
    188,356.80/282,753.90 = 108,458.40/x
  3. Step 3: Cross multiply
    188,356.80x = 282,753.90 × 108,458.40
  4. Step 4: Simplify right side
    188,356.80x = 30,667,035,587.76
  5. Step 5: Solve for x
    x = 30,667,035,587.76/188,356.80
  6. Step 6: Final answer
    x = 162,813.53

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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.