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Finding the Fourth Proportional to 561,037.76, 774,234.96 and 306,388.94

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Solution

The fourth proportional to 561,037.76, 774,234.96 and 306,388.94 is: 422,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,037.76 : 774,234.96 = 306,388.94 : x
  2. Step 2: Convert to fraction form
    561,037.76/774,234.96 = 306,388.94/x
  3. Step 3: Cross multiply
    561,037.76x = 774,234.96 × 306,388.94
  4. Step 4: Simplify right side
    561,037.76x = 237,217,028,705.34
  5. Step 5: Solve for x
    x = 237,217,028,705.34/561,037.76
  6. Step 6: Final answer
    x = 422,818.29

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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.