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Finding the Fourth Proportional to 391,283.50, 587,125.42 and 186,350.17

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Solution

The fourth proportional to 391,283.50, 587,125.42 and 186,350.17 is: 279,620.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,283.50 : 587,125.42 = 186,350.17 : x
  2. Step 2: Convert to fraction form
    391,283.50/587,125.42 = 186,350.17/x
  3. Step 3: Cross multiply
    391,283.50x = 587,125.42 × 186,350.17
  4. Step 4: Simplify right side
    391,283.50x = 109,410,919,894.63
  5. Step 5: Solve for x
    x = 109,410,919,894.63/391,283.50
  6. Step 6: Final answer
    x = 279,620.58

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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.