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Finding the Fourth Proportional to 291,214.56, 436,821.36 and 91,552.38

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Solution

The fourth proportional to 291,214.56, 436,821.36 and 91,552.38 is: 137,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,214.56 : 436,821.36 = 91,552.38 : x
  2. Step 2: Convert to fraction form
    291,214.56/436,821.36 = 91,552.38/x
  3. Step 3: Cross multiply
    291,214.56x = 436,821.36 × 91,552.38
  4. Step 4: Simplify right side
    291,214.56x = 39,992,035,142.84
  5. Step 5: Solve for x
    x = 39,992,035,142.84/291,214.56
  6. Step 6: Final answer
    x = 137,328.42

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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.