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Finding the Fourth Proportional to 291,492.20, 436,979.10 and 173,037.80

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Solution

The fourth proportional to 291,492.20, 436,979.10 and 173,037.80 is: 259,402.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,492.20 : 436,979.10 = 173,037.80 : x
  2. Step 2: Convert to fraction form
    291,492.20/436,979.10 = 173,037.80/x
  3. Step 3: Cross multiply
    291,492.20x = 436,979.10 × 173,037.80
  4. Step 4: Simplify right side
    291,492.20x = 75,613,902,109.98
  5. Step 5: Solve for x
    x = 75,613,902,109.98/291,492.20
  6. Step 6: Final answer
    x = 259,402.83

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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.