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Finding the Fourth Proportional to 316,067.20, 474,003.60 and 91,448.80

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Solution

The fourth proportional to 316,067.20, 474,003.60 and 91,448.80 is: 137,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,067.20 : 474,003.60 = 91,448.80 : x
  2. Step 2: Convert to fraction form
    316,067.20/474,003.60 = 91,448.80/x
  3. Step 3: Cross multiply
    316,067.20x = 474,003.60 × 91,448.80
  4. Step 4: Simplify right side
    316,067.20x = 43,347,060,415.68
  5. Step 5: Solve for x
    x = 43,347,060,415.68/316,067.20
  6. Step 6: Final answer
    x = 137,145.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.