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Finding the Fourth Proportional to 555,135.16, 766,086.42 and 300,486.28

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Solution

The fourth proportional to 555,135.16, 766,086.42 and 300,486.28 is: 414,671.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,135.16 : 766,086.42 = 300,486.28 : x
  2. Step 2: Convert to fraction form
    555,135.16/766,086.42 = 300,486.28/x
  3. Step 3: Cross multiply
    555,135.16x = 766,086.42 × 300,486.28
  4. Step 4: Simplify right side
    555,135.16x = 230,198,458,504.32
  5. Step 5: Solve for x
    x = 230,198,458,504.32/555,135.16
  6. Step 6: Final answer
    x = 414,671.01

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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.