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Finding the Fourth Proportional to 487,662.62, 673,042.23 and 272,817.20

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Solution

The fourth proportional to 487,662.62, 673,042.23 and 272,817.20 is: 376,525.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,662.62 : 673,042.23 = 272,817.20 : x
  2. Step 2: Convert to fraction form
    487,662.62/673,042.23 = 272,817.20/x
  3. Step 3: Cross multiply
    487,662.62x = 673,042.23 × 272,817.20
  4. Step 4: Simplify right side
    487,662.62x = 183,617,498,352.96
  5. Step 5: Solve for x
    x = 183,617,498,352.96/487,662.62
  6. Step 6: Final answer
    x = 376,525.68

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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.