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Finding the Fourth Proportional to 397,384.59, 548,593.83 and 306,536.61

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Solution

The fourth proportional to 397,384.59, 548,593.83 and 306,536.61 is: 423,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,384.59 : 548,593.83 = 306,536.61 : x
  2. Step 2: Convert to fraction form
    397,384.59/548,593.83 = 306,536.61/x
  3. Step 3: Cross multiply
    397,384.59x = 548,593.83 × 306,536.61
  4. Step 4: Simplify right side
    397,384.59x = 168,164,092,915.12
  5. Step 5: Solve for x
    x = 168,164,092,915.12/397,384.59
  6. Step 6: Final answer
    x = 423,177.19

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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.