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Finding the Fourth Proportional to 382,367.86, 527,664.45 and 212,600.50

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Solution

The fourth proportional to 382,367.86, 527,664.45 and 212,600.50 is: 293,386.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,367.86 : 527,664.45 = 212,600.50 : x
  2. Step 2: Convert to fraction form
    382,367.86/527,664.45 = 212,600.50/x
  3. Step 3: Cross multiply
    382,367.86x = 527,664.45 × 212,600.50
  4. Step 4: Simplify right side
    382,367.86x = 112,181,725,902.23
  5. Step 5: Solve for x
    x = 112,181,725,902.23/382,367.86
  6. Step 6: Final answer
    x = 293,386.91

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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.