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Finding the Fourth Proportional to 324,491.60, 486,276.60 and 239,589.20

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Solution

The fourth proportional to 324,491.60, 486,276.60 and 239,589.20 is: 359,043.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,491.60 : 486,276.60 = 239,589.20 : x
  2. Step 2: Convert to fraction form
    324,491.60/486,276.60 = 239,589.20/x
  3. Step 3: Cross multiply
    324,491.60x = 486,276.60 × 239,589.20
  4. Step 4: Simplify right side
    324,491.60x = 116,506,621,572.72
  5. Step 5: Solve for x
    x = 116,506,621,572.72/324,491.60
  6. Step 6: Final answer
    x = 359,043.57

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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.