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Finding the Fourth Proportional to 379,407.50, 523,576.02 and 207,321.70

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Solution

The fourth proportional to 379,407.50, 523,576.02 and 207,321.70 is: 286,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,407.50 : 523,576.02 = 207,321.70 : x
  2. Step 2: Convert to fraction form
    379,407.50/523,576.02 = 207,321.70/x
  3. Step 3: Cross multiply
    379,407.50x = 523,576.02 × 207,321.70
  4. Step 4: Simplify right side
    379,407.50x = 108,548,670,545.63
  5. Step 5: Solve for x
    x = 108,548,670,545.63/379,407.50
  6. Step 6: Final answer
    x = 286,100.49

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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.