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Finding the Fourth Proportional to 331,365.88, 457,297.86 and 188,139.25

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Solution

The fourth proportional to 331,365.88, 457,297.86 and 188,139.25 is: 259,639.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,365.88 : 457,297.86 = 188,139.25 : x
  2. Step 2: Convert to fraction form
    331,365.88/457,297.86 = 188,139.25/x
  3. Step 3: Cross multiply
    331,365.88x = 457,297.86 × 188,139.25
  4. Step 4: Simplify right side
    331,365.88x = 86,035,676,407.01
  5. Step 5: Solve for x
    x = 86,035,676,407.01/331,365.88
  6. Step 6: Final answer
    x = 259,639.52

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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.