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Finding the Fourth Proportional to 291,179.61, 436,771.85 and 91,495.58

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Solution

The fourth proportional to 291,179.61, 436,771.85 and 91,495.58 is: 137,244.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,179.61 : 436,771.85 = 91,495.58 : x
  2. Step 2: Convert to fraction form
    291,179.61/436,771.85 = 91,495.58/x
  3. Step 3: Cross multiply
    291,179.61x = 436,771.85 × 91,495.58
  4. Step 4: Simplify right side
    291,179.61x = 39,962,691,102.09
  5. Step 5: Solve for x
    x = 39,962,691,102.09/291,179.61
  6. Step 6: Final answer
    x = 137,244.13

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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.