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Finding the Fourth Proportional to 555,138.36, 766,091.52 and 300,488.94

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Solution

The fourth proportional to 555,138.36, 766,091.52 and 300,488.94 is: 414,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,138.36 : 766,091.52 = 300,488.94 : x
  2. Step 2: Convert to fraction form
    555,138.36/766,091.52 = 300,488.94/x
  3. Step 3: Cross multiply
    555,138.36x = 766,091.52 × 300,488.94
  4. Step 4: Simplify right side
    555,138.36x = 230,202,028,787.79
  5. Step 5: Solve for x
    x = 230,202,028,787.79/555,138.36
  6. Step 6: Final answer
    x = 414,675.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.