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Finding the Fourth Proportional to 376,590, 519,740.28 and 217,614

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Solution

The fourth proportional to 376,590, 519,740.28 and 217,614 is: 300,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,590 : 519,740.28 = 217,614 : x
  2. Step 2: Convert to fraction form
    376,590/519,740.28 = 217,614/x
  3. Step 3: Cross multiply
    376,590x = 519,740.28 × 217,614
  4. Step 4: Simplify right side
    376,590x = 113,102,761,291.92
  5. Step 5: Solve for x
    x = 113,102,761,291.92/376,590
  6. Step 6: Final answer
    x = 300,333.95

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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.