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Finding the Fourth Proportional to 490,671.81, 677,130.82 and 272,883.51

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Solution

The fourth proportional to 490,671.81, 677,130.82 and 272,883.51 is: 376,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,671.81 : 677,130.82 = 272,883.51 : x
  2. Step 2: Convert to fraction form
    490,671.81/677,130.82 = 272,883.51/x
  3. Step 3: Cross multiply
    490,671.81x = 677,130.82 × 272,883.51
  4. Step 4: Simplify right side
    490,671.81x = 184,777,834,208.57
  5. Step 5: Solve for x
    x = 184,777,834,208.57/490,671.81
  6. Step 6: Final answer
    x = 376,581.31

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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.