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Finding the Fourth Proportional to 379,442.99, 523,638.84 and 207,371.61

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Solution

The fourth proportional to 379,442.99, 523,638.84 and 207,371.61 is: 286,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,442.99 : 523,638.84 = 207,371.61 : x
  2. Step 2: Convert to fraction form
    379,442.99/523,638.84 = 207,371.61/x
  3. Step 3: Cross multiply
    379,442.99x = 523,638.84 × 207,371.61
  4. Step 4: Simplify right side
    379,442.99x = 108,587,829,309.33
  5. Step 5: Solve for x
    x = 108,587,829,309.33/379,442.99
  6. Step 6: Final answer
    x = 286,176.93

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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.