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Finding the Fourth Proportional to 418,974.93, 628,520.72 and 134,674.25

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Solution

The fourth proportional to 418,974.93, 628,520.72 and 134,674.25 is: 202,030.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,974.93 : 628,520.72 = 134,674.25 : x
  2. Step 2: Convert to fraction form
    418,974.93/628,520.72 = 134,674.25/x
  3. Step 3: Cross multiply
    418,974.93x = 628,520.72 × 134,674.25
  4. Step 4: Simplify right side
    418,974.93x = 84,645,552,759.49
  5. Step 5: Solve for x
    x = 84,645,552,759.49/418,974.93
  6. Step 6: Final answer
    x = 202,030.11

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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.