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Finding the Fourth Proportional to 439,491.64, 659,263.20 and 169,621.24

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Solution

The fourth proportional to 439,491.64, 659,263.20 and 169,621.24 is: 254,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,491.64 : 659,263.20 = 169,621.24 : x
  2. Step 2: Convert to fraction form
    439,491.64/659,263.20 = 169,621.24/x
  3. Step 3: Cross multiply
    439,491.64x = 659,263.20 × 169,621.24
  4. Step 4: Simplify right side
    439,491.64x = 111,825,041,470.37
  5. Step 5: Solve for x
    x = 111,825,041,470.37/439,491.64
  6. Step 6: Final answer
    x = 254,441.79

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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.