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Finding the Fourth Proportional to 418,751.52, 628,185.18 and 134,375.18

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Solution

The fourth proportional to 418,751.52, 628,185.18 and 134,375.18 is: 201,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,751.52 : 628,185.18 = 134,375.18 : x
  2. Step 2: Convert to fraction form
    418,751.52/628,185.18 = 134,375.18/x
  3. Step 3: Cross multiply
    418,751.52x = 628,185.18 × 134,375.18
  4. Step 4: Simplify right side
    418,751.52x = 84,412,496,635.83
  5. Step 5: Solve for x
    x = 84,412,496,635.83/418,751.52
  6. Step 6: Final answer
    x = 201,581.35

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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.