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Finding the Fourth Proportional to 399,305.54, 597,139.05 and 298,174.61

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Solution

The fourth proportional to 399,305.54, 597,139.05 and 298,174.61 is: 445,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,305.54 : 597,139.05 = 298,174.61 : x
  2. Step 2: Convert to fraction form
    399,305.54/597,139.05 = 298,174.61/x
  3. Step 3: Cross multiply
    399,305.54x = 597,139.05 × 298,174.61
  4. Step 4: Simplify right side
    399,305.54x = 178,051,703,349.52
  5. Step 5: Solve for x
    x = 178,051,703,349.52/399,305.54
  6. Step 6: Final answer
    x = 445,903.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.