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Finding the Fourth Proportional to 291,188.20, 436,844.40 and 164,887.60

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Solution

The fourth proportional to 291,188.20, 436,844.40 and 164,887.60 is: 247,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,188.20 : 436,844.40 = 164,887.60 : x
  2. Step 2: Convert to fraction form
    291,188.20/436,844.40 = 164,887.60/x
  3. Step 3: Cross multiply
    291,188.20x = 436,844.40 × 164,887.60
  4. Step 4: Simplify right side
    291,188.20x = 72,030,224,689.44
  5. Step 5: Solve for x
    x = 72,030,224,689.44/291,188.20
  6. Step 6: Final answer
    x = 247,366.56

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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.