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Finding the Fourth Proportional to 555,208.80, 766,187.28 and 300,559.92

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Solution

The fourth proportional to 555,208.80, 766,187.28 and 300,559.92 is: 414,772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,208.80 : 766,187.28 = 300,559.92 : x
  2. Step 2: Convert to fraction form
    555,208.80/766,187.28 = 300,559.92/x
  3. Step 3: Cross multiply
    555,208.80x = 766,187.28 × 300,559.92
  4. Step 4: Simplify right side
    555,208.80x = 230,285,187,581.82
  5. Step 5: Solve for x
    x = 230,285,187,581.82/555,208.80
  6. Step 6: Final answer
    x = 414,772.22

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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.