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Finding the Fourth Proportional to 291,486.87, 437,132.64 and 111,530.43

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Solution

The fourth proportional to 291,486.87, 437,132.64 and 111,530.43 is: 167,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,486.87 : 437,132.64 = 111,530.43 : x
  2. Step 2: Convert to fraction form
    291,486.87/437,132.64 = 111,530.43/x
  3. Step 3: Cross multiply
    291,486.87x = 437,132.64 × 111,530.43
  4. Step 4: Simplify right side
    291,486.87x = 48,753,591,306.24
  5. Step 5: Solve for x
    x = 48,753,591,306.24/291,486.87
  6. Step 6: Final answer
    x = 167,258.28

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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.