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Finding the Fourth Proportional to 548,731.82, 757,279.32 and 306,999.98

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Solution

The fourth proportional to 548,731.82, 757,279.32 and 306,999.98 is: 423,676.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,731.82 : 757,279.32 = 306,999.98 : x
  2. Step 2: Convert to fraction form
    548,731.82/757,279.32 = 306,999.98/x
  3. Step 3: Cross multiply
    548,731.82x = 757,279.32 × 306,999.98
  4. Step 4: Simplify right side
    548,731.82x = 232,484,736,094.41
  5. Step 5: Solve for x
    x = 232,484,736,094.41/548,731.82
  6. Step 6: Final answer
    x = 423,676.43

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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.