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Finding the Fourth Proportional to 291,868.60, 437,816.02 and 89,449.88

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Solution

The fourth proportional to 291,868.60, 437,816.02 and 89,449.88 is: 134,178.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,868.60 : 437,816.02 = 89,449.88 : x
  2. Step 2: Convert to fraction form
    291,868.60/437,816.02 = 89,449.88/x
  3. Step 3: Cross multiply
    291,868.60x = 437,816.02 × 89,449.88
  4. Step 4: Simplify right side
    291,868.60x = 39,162,590,451.08
  5. Step 5: Solve for x
    x = 39,162,590,451.08/291,868.60
  6. Step 6: Final answer
    x = 134,178.84

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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.