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Finding the Fourth Proportional to 193,396.20, 289,748.70 and 165,748.20

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Solution

The fourth proportional to 193,396.20, 289,748.70 and 165,748.20 is: 248,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,396.20 : 289,748.70 = 165,748.20 : x
  2. Step 2: Convert to fraction form
    193,396.20/289,748.70 = 165,748.20/x
  3. Step 3: Cross multiply
    193,396.20x = 289,748.70 × 165,748.20
  4. Step 4: Simplify right side
    193,396.20x = 48,025,325,477.34
  5. Step 5: Solve for x
    x = 48,025,325,477.34/193,396.20
  6. Step 6: Final answer
    x = 248,326.11

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1.5x scale

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.