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Finding the Fourth Proportional to 391,573.49, 587,433.74 and 125,262.50

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Solution

The fourth proportional to 391,573.49, 587,433.74 and 125,262.50 is: 187,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,573.49 : 587,433.74 = 125,262.50 : x
  2. Step 2: Convert to fraction form
    391,573.49/587,433.74 = 125,262.50/x
  3. Step 3: Cross multiply
    391,573.49x = 587,433.74 × 125,262.50
  4. Step 4: Simplify right side
    391,573.49x = 73,583,420,638.49
  5. Step 5: Solve for x
    x = 73,583,420,638.49/391,573.49
  6. Step 6: Final answer
    x = 187,917.27

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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.