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Finding the Fourth Proportional to 194,448.80, 291,212.40 and 119,799.20

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Solution

The fourth proportional to 194,448.80, 291,212.40 and 119,799.20 is: 179,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,448.80 : 291,212.40 = 119,799.20 : x
  2. Step 2: Convert to fraction form
    194,448.80/291,212.40 = 119,799.20/x
  3. Step 3: Cross multiply
    194,448.80x = 291,212.40 × 119,799.20
  4. Step 4: Simplify right side
    194,448.80x = 34,887,012,550.08
  5. Step 5: Solve for x
    x = 34,887,012,550.08/194,448.80
  6. Step 6: Final answer
    x = 179,414.90

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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.