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Finding the Fourth Proportional to 387,272.62, 580,708.42 and 173,856.79

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Solution

The fourth proportional to 387,272.62, 580,708.42 and 173,856.79 is: 260,695.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,272.62 : 580,708.42 = 173,856.79 : x
  2. Step 2: Convert to fraction form
    387,272.62/580,708.42 = 173,856.79/x
  3. Step 3: Cross multiply
    387,272.62x = 580,708.42 × 173,856.79
  4. Step 4: Simplify right side
    387,272.62x = 100,960,099,829.88
  5. Step 5: Solve for x
    x = 100,960,099,829.88/387,272.62
  6. Step 6: Final answer
    x = 260,695.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.