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Finding the Fourth Proportional to 484,725.36, 668,747.88 and 280,664.91

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Solution

The fourth proportional to 484,725.36, 668,747.88 and 280,664.91 is: 387,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,725.36 : 668,747.88 = 280,664.91 : x
  2. Step 2: Convert to fraction form
    484,725.36/668,747.88 = 280,664.91/x
  3. Step 3: Cross multiply
    484,725.36x = 668,747.88 × 280,664.91
  4. Step 4: Simplify right side
    484,725.36x = 187,694,063,552.89
  5. Step 5: Solve for x
    x = 187,694,063,552.89/484,725.36
  6. Step 6: Final answer
    x = 387,217.34

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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.