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Finding the Fourth Proportional to 291,891.60, 437,983.20 and 165,628.80

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Solution

The fourth proportional to 291,891.60, 437,983.20 and 165,628.80 is: 248,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,891.60 : 437,983.20 = 165,628.80 : x
  2. Step 2: Convert to fraction form
    291,891.60/437,983.20 = 165,628.80/x
  3. Step 3: Cross multiply
    291,891.60x = 437,983.20 × 165,628.80
  4. Step 4: Simplify right side
    291,891.60x = 72,542,631,836.16
  5. Step 5: Solve for x
    x = 72,542,631,836.16/291,891.60
  6. Step 6: Final answer
    x = 248,525.93

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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.