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Finding the Fourth Proportional to 291,232.62, 436,868.72 and 99,028.77

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Solution

The fourth proportional to 291,232.62, 436,868.72 and 99,028.77 is: 148,549.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,232.62 : 436,868.72 = 99,028.77 : x
  2. Step 2: Convert to fraction form
    291,232.62/436,868.72 = 99,028.77/x
  3. Step 3: Cross multiply
    291,232.62x = 436,868.72 × 99,028.77
  4. Step 4: Simplify right side
    291,232.62x = 43,262,571,993.07
  5. Step 5: Solve for x
    x = 43,262,571,993.07/291,232.62
  6. Step 6: Final answer
    x = 148,549.88

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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.