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Finding the Fourth Proportional to 291,264.36, 436,954.88 and 91,635

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Solution

The fourth proportional to 291,264.36, 436,954.88 and 91,635 is: 137,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,264.36 : 436,954.88 = 91,635 : x
  2. Step 2: Convert to fraction form
    291,264.36/436,954.88 = 91,635/x
  3. Step 3: Cross multiply
    291,264.36x = 436,954.88 × 91,635
  4. Step 4: Simplify right side
    291,264.36x = 40,040,360,428.80
  5. Step 5: Solve for x
    x = 40,040,360,428.80/291,264.36
  6. Step 6: Final answer
    x = 137,470.85

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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.