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Finding the Fourth Proportional to 658,334.84, 987,401.34 and 208,997.46

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Solution

The fourth proportional to 658,334.84, 987,401.34 and 208,997.46 is: 313,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,334.84 : 987,401.34 = 208,997.46 : x
  2. Step 2: Convert to fraction form
    658,334.84/987,401.34 = 208,997.46/x
  3. Step 3: Cross multiply
    658,334.84x = 987,401.34 × 208,997.46
  4. Step 4: Simplify right side
    658,334.84x = 206,364,372,060.60
  5. Step 5: Solve for x
    x = 206,364,372,060.60/658,334.84
  6. Step 6: Final answer
    x = 313,464.15

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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.