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Finding the Fourth Proportional to 379,344.30, 523,489.02 and 207,258.57

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Solution

The fourth proportional to 379,344.30, 523,489.02 and 207,258.57 is: 286,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,344.30 : 523,489.02 = 207,258.57 : x
  2. Step 2: Convert to fraction form
    379,344.30/523,489.02 = 207,258.57/x
  3. Step 3: Cross multiply
    379,344.30x = 523,489.02 × 207,258.57
  4. Step 4: Simplify right side
    379,344.30x = 108,497,585,695.90
  5. Step 5: Solve for x
    x = 108,497,585,695.90/379,344.30
  6. Step 6: Final answer
    x = 286,013.49

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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.