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Finding the Fourth Proportional to 291,278.80, 436,932.60 and 151,310.80

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Solution

The fourth proportional to 291,278.80, 436,932.60 and 151,310.80 is: 226,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,278.80 : 436,932.60 = 151,310.80 : x
  2. Step 2: Convert to fraction form
    291,278.80/436,932.60 = 151,310.80/x
  3. Step 3: Cross multiply
    291,278.80x = 436,932.60 × 151,310.80
  4. Step 4: Simplify right side
    291,278.80x = 66,112,621,252.08
  5. Step 5: Solve for x
    x = 66,112,621,252.08/291,278.80
  6. Step 6: Final answer
    x = 226,973.68

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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.