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Finding the Fourth Proportional to 305,589.70, 458,374.47 and 125,668.90

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Solution

The fourth proportional to 305,589.70, 458,374.47 and 125,668.90 is: 188,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,589.70 : 458,374.47 = 125,668.90 : x
  2. Step 2: Convert to fraction form
    305,589.70/458,374.47 = 125,668.90/x
  3. Step 3: Cross multiply
    305,589.70x = 458,374.47 × 125,668.90
  4. Step 4: Simplify right side
    305,589.70x = 57,603,415,432.98
  5. Step 5: Solve for x
    x = 57,603,415,432.98/305,589.70
  6. Step 6: Final answer
    x = 188,499.20

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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.