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Finding the Fourth Proportional to 418,934.12, 628,420.56 and 119,435

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Solution

The fourth proportional to 418,934.12, 628,420.56 and 119,435 is: 179,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,934.12 : 628,420.56 = 119,435 : x
  2. Step 2: Convert to fraction form
    418,934.12/628,420.56 = 119,435/x
  3. Step 3: Cross multiply
    418,934.12x = 628,420.56 × 119,435
  4. Step 4: Simplify right side
    418,934.12x = 75,055,409,583.60
  5. Step 5: Solve for x
    x = 75,055,409,583.60/418,934.12
  6. Step 6: Final answer
    x = 179,158.03

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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.