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Finding the Fourth Proportional to 305,028.76, 457,486.94 and 127,488.12

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Solution

The fourth proportional to 305,028.76, 457,486.94 and 127,488.12 is: 191,208.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,028.76 : 457,486.94 = 127,488.12 : x
  2. Step 2: Convert to fraction form
    305,028.76/457,486.94 = 127,488.12/x
  3. Step 3: Cross multiply
    305,028.76x = 457,486.94 × 127,488.12
  4. Step 4: Simplify right side
    305,028.76x = 58,324,149,905.15
  5. Step 5: Solve for x
    x = 58,324,149,905.15/305,028.76
  6. Step 6: Final answer
    x = 191,208.69

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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.