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Finding the Fourth Proportional to 361,179.36, 497,287.08 and 318,132

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Solution

The fourth proportional to 361,179.36, 497,287.08 and 318,132 is: 438,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,179.36 : 497,287.08 = 318,132 : x
  2. Step 2: Convert to fraction form
    361,179.36/497,287.08 = 318,132/x
  3. Step 3: Cross multiply
    361,179.36x = 497,287.08 × 318,132
  4. Step 4: Simplify right side
    361,179.36x = 158,202,933,334.56
  5. Step 5: Solve for x
    x = 158,202,933,334.56/361,179.36
  6. Step 6: Final answer
    x = 438,017.65

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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.