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Finding the Fourth Proportional to 291,379.20, 436,809.60 and 172,924.80

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Solution

The fourth proportional to 291,379.20, 436,809.60 and 172,924.80 is: 259,233.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,379.20 : 436,809.60 = 172,924.80 : x
  2. Step 2: Convert to fraction form
    291,379.20/436,809.60 = 172,924.80/x
  3. Step 3: Cross multiply
    291,379.20x = 436,809.60 × 172,924.80
  4. Step 4: Simplify right side
    291,379.20x = 75,535,212,718.08
  5. Step 5: Solve for x
    x = 75,535,212,718.08/291,379.20
  6. Step 6: Final answer
    x = 259,233.37

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1.5x scale

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.