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Finding the Fourth Proportional to 557,726.11, 769,676.68 and 303,077.30

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Solution

The fourth proportional to 557,726.11, 769,676.68 and 303,077.30 is: 418,254.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,726.11 : 769,676.68 = 303,077.30 : x
  2. Step 2: Convert to fraction form
    557,726.11/769,676.68 = 303,077.30/x
  3. Step 3: Cross multiply
    557,726.11x = 769,676.68 × 303,077.30
  4. Step 4: Simplify right side
    557,726.11x = 233,271,526,577.83
  5. Step 5: Solve for x
    x = 233,271,526,577.83/557,726.11
  6. Step 6: Final answer
    x = 418,254.63

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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.