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Finding the Fourth Proportional to 491,235.81, 677,850.55 and 276,371.25

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Solution

The fourth proportional to 491,235.81, 677,850.55 and 276,371.25 is: 381,361.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,235.81 : 677,850.55 = 276,371.25 : x
  2. Step 2: Convert to fraction form
    491,235.81/677,850.55 = 276,371.25/x
  3. Step 3: Cross multiply
    491,235.81x = 677,850.55 × 276,371.25
  4. Step 4: Simplify right side
    491,235.81x = 187,338,403,816.69
  5. Step 5: Solve for x
    x = 187,338,403,816.69/491,235.81
  6. Step 6: Final answer
    x = 381,361.46

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1.5x scale

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.