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Finding the Fourth Proportional to 487,662.21, 673,024.41 and 280,937.70

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Solution

The fourth proportional to 487,662.21, 673,024.41 and 280,937.70 is: 387,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,662.21 : 673,024.41 = 280,937.70 : x
  2. Step 2: Convert to fraction form
    487,662.21/673,024.41 = 280,937.70/x
  3. Step 3: Cross multiply
    487,662.21x = 673,024.41 × 280,937.70
  4. Step 4: Simplify right side
    487,662.21x = 189,077,929,789.26
  5. Step 5: Solve for x
    x = 189,077,929,789.26/487,662.21
  6. Step 6: Final answer
    x = 387,723.15

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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.