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Finding the Fourth Proportional to 291,620.40, 436,264.20 and 252,610.80

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Solution

The fourth proportional to 291,620.40, 436,264.20 and 252,610.80 is: 377,905.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,620.40 : 436,264.20 = 252,610.80 : x
  2. Step 2: Convert to fraction form
    291,620.40/436,264.20 = 252,610.80/x
  3. Step 3: Cross multiply
    291,620.40x = 436,264.20 × 252,610.80
  4. Step 4: Simplify right side
    291,620.40x = 110,205,048,573.36
  5. Step 5: Solve for x
    x = 110,205,048,573.36/291,620.40
  6. Step 6: Final answer
    x = 377,905.83

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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.