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Finding the Fourth Proportional to 486,367.60, 730,012.20 and 299,743.60

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Solution

The fourth proportional to 486,367.60, 730,012.20 and 299,743.60 is: 449,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,367.60 : 730,012.20 = 299,743.60 : x
  2. Step 2: Convert to fraction form
    486,367.60/730,012.20 = 299,743.60/x
  3. Step 3: Cross multiply
    486,367.60x = 730,012.20 × 299,743.60
  4. Step 4: Simplify right side
    486,367.60x = 218,816,484,871.92
  5. Step 5: Solve for x
    x = 218,816,484,871.92/486,367.60
  6. Step 6: Final answer
    x = 449,899.39

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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.