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Finding the Fourth Proportional to 379,139.68, 523,212.96 and 207,060

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Solution

The fourth proportional to 379,139.68, 523,212.96 and 207,060 is: 285,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,139.68 : 523,212.96 = 207,060 : x
  2. Step 2: Convert to fraction form
    379,139.68/523,212.96 = 207,060/x
  3. Step 3: Cross multiply
    379,139.68x = 523,212.96 × 207,060
  4. Step 4: Simplify right side
    379,139.68x = 108,336,475,497.60
  5. Step 5: Solve for x
    x = 108,336,475,497.60/379,139.68
  6. Step 6: Final answer
    x = 285,742.91

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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.