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Finding the Fourth Proportional to 304,801.21, 420,621.18 and 168,834.73

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Solution

The fourth proportional to 304,801.21, 420,621.18 and 168,834.73 is: 232,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,801.21 : 420,621.18 = 168,834.73 : x
  2. Step 2: Convert to fraction form
    304,801.21/420,621.18 = 168,834.73/x
  3. Step 3: Cross multiply
    304,801.21x = 420,621.18 × 168,834.73
  4. Step 4: Simplify right side
    304,801.21x = 71,015,463,357.58
  5. Step 5: Solve for x
    x = 71,015,463,357.58/304,801.21
  6. Step 6: Final answer
    x = 232,989.44

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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.