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Finding the Fourth Proportional to 418,873.65, 628,297.10 and 134,563.04

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Solution

The fourth proportional to 418,873.65, 628,297.10 and 134,563.04 is: 201,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,873.65 : 628,297.10 = 134,563.04 : x
  2. Step 2: Convert to fraction form
    418,873.65/628,297.10 = 134,563.04/x
  3. Step 3: Cross multiply
    418,873.65x = 628,297.10 × 134,563.04
  4. Step 4: Simplify right side
    418,873.65x = 84,545,569,201.72
  5. Step 5: Solve for x
    x = 84,545,569,201.72/418,873.65
  6. Step 6: Final answer
    x = 201,840.27

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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.