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Finding the Fourth Proportional to 391,574.49, 587,435.24 and 125,263.50

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Solution

The fourth proportional to 391,574.49, 587,435.24 and 125,263.50 is: 187,918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,574.49 : 587,435.24 = 125,263.50 : x
  2. Step 2: Convert to fraction form
    391,574.49/587,435.24 = 125,263.50/x
  3. Step 3: Cross multiply
    391,574.49x = 587,435.24 × 125,263.50
  4. Step 4: Simplify right side
    391,574.49x = 73,584,194,185.74
  5. Step 5: Solve for x
    x = 73,584,194,185.74/391,574.49
  6. Step 6: Final answer
    x = 187,918.76

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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.