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Finding the Fourth Proportional to 188,866.60, 282,643.80 and 173,120.20

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Solution

The fourth proportional to 188,866.60, 282,643.80 and 173,120.20 is: 259,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,866.60 : 282,643.80 = 173,120.20 : x
  2. Step 2: Convert to fraction form
    188,866.60/282,643.80 = 173,120.20/x
  3. Step 3: Cross multiply
    188,866.60x = 282,643.80 × 173,120.20
  4. Step 4: Simplify right side
    188,866.60x = 48,931,351,184.76
  5. Step 5: Solve for x
    x = 48,931,351,184.76/188,866.60
  6. Step 6: Final answer
    x = 259,078.90

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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.