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Finding the Fourth Proportional to 291,255.62, 436,883 and 91,593.50

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Solution

The fourth proportional to 291,255.62, 436,883 and 91,593.50 is: 137,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,255.62 : 436,883 = 91,593.50 : x
  2. Step 2: Convert to fraction form
    291,255.62/436,883 = 91,593.50/x
  3. Step 3: Cross multiply
    291,255.62x = 436,883 × 91,593.50
  4. Step 4: Simplify right side
    291,255.62x = 40,015,643,060.50
  5. Step 5: Solve for x
    x = 40,015,643,060.50/291,255.62
  6. Step 6: Final answer
    x = 137,390.11

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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.