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Finding the Fourth Proportional to 479,241.62, 661,234.56 and 315,880.02

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Solution

The fourth proportional to 479,241.62, 661,234.56 and 315,880.02 is: 435,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,241.62 : 661,234.56 = 315,880.02 : x
  2. Step 2: Convert to fraction form
    479,241.62/661,234.56 = 315,880.02/x
  3. Step 3: Cross multiply
    479,241.62x = 661,234.56 × 315,880.02
  4. Step 4: Simplify right side
    479,241.62x = 208,870,786,037.49
  5. Step 5: Solve for x
    x = 208,870,786,037.49/479,241.62
  6. Step 6: Final answer
    x = 435,836.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.