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Finding the Fourth Proportional to 291,191.55, 436,787.62 and 91,529.38

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Solution

The fourth proportional to 291,191.55, 436,787.62 and 91,529.38 is: 137,294.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,191.55 : 436,787.62 = 91,529.38 : x
  2. Step 2: Convert to fraction form
    291,191.55/436,787.62 = 91,529.38/x
  3. Step 3: Cross multiply
    291,191.55x = 436,787.62 × 91,529.38
  4. Step 4: Simplify right side
    291,191.55x = 39,978,900,050.28
  5. Step 5: Solve for x
    x = 39,978,900,050.28/291,191.55
  6. Step 6: Final answer
    x = 137,294.16

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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.