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Finding the Fourth Proportional to 417,880.16, 576,725.62 and 245,789.91

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Solution

The fourth proportional to 417,880.16, 576,725.62 and 245,789.91 is: 339,220.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,880.16 : 576,725.62 = 245,789.91 : x
  2. Step 2: Convert to fraction form
    417,880.16/576,725.62 = 245,789.91/x
  3. Step 3: Cross multiply
    417,880.16x = 576,725.62 × 245,789.91
  4. Step 4: Simplify right side
    417,880.16x = 141,753,338,234.49
  5. Step 5: Solve for x
    x = 141,753,338,234.49/417,880.16
  6. Step 6: Final answer
    x = 339,220.07

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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.