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Finding the Fourth Proportional to 490,676.80, 677,137.72 and 272,888.53

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Solution

The fourth proportional to 490,676.80, 677,137.72 and 272,888.53 is: 376,588.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,676.80 : 677,137.72 = 272,888.53 : x
  2. Step 2: Convert to fraction form
    490,676.80/677,137.72 = 272,888.53/x
  3. Step 3: Cross multiply
    490,676.80x = 677,137.72 × 272,888.53
  4. Step 4: Simplify right side
    490,676.80x = 184,783,117,018.35
  5. Step 5: Solve for x
    x = 184,783,117,018.35/490,676.80
  6. Step 6: Final answer
    x = 376,588.25

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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.