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Finding the Fourth Proportional to 555,520.88, 766,617.36 and 300,871.28

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Solution

The fourth proportional to 555,520.88, 766,617.36 and 300,871.28 is: 415,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,520.88 : 766,617.36 = 300,871.28 : x
  2. Step 2: Convert to fraction form
    555,520.88/766,617.36 = 300,871.28/x
  3. Step 3: Cross multiply
    555,520.88x = 766,617.36 × 300,871.28
  4. Step 4: Simplify right side
    555,520.88x = 230,653,146,373.42
  5. Step 5: Solve for x
    x = 230,653,146,373.42/555,520.88
  6. Step 6: Final answer
    x = 415,201.58

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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.