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Finding the Fourth Proportional to 658,333.34, 987,399.09 and 208,995.96

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Solution

The fourth proportional to 658,333.34, 987,399.09 and 208,995.96 is: 313,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,333.34 : 987,399.09 = 208,995.96 : x
  2. Step 2: Convert to fraction form
    658,333.34/987,399.09 = 208,995.96/x
  3. Step 3: Cross multiply
    658,333.34x = 987,399.09 × 208,995.96
  4. Step 4: Simplify right side
    658,333.34x = 206,362,420,717.68
  5. Step 5: Solve for x
    x = 206,362,420,717.68/658,333.34
  6. Step 6: Final answer
    x = 313,461.90

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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.