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Finding the Fourth Proportional to 418,807.08, 628,151.34 and 134,522.34

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Solution

The fourth proportional to 418,807.08, 628,151.34 and 134,522.34 is: 201,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,807.08 : 628,151.34 = 134,522.34 : x
  2. Step 2: Convert to fraction form
    418,807.08/628,151.34 = 134,522.34/x
  3. Step 3: Cross multiply
    418,807.08x = 628,151.34 × 134,522.34
  4. Step 4: Simplify right side
    418,807.08x = 84,500,388,130.94
  5. Step 5: Solve for x
    x = 84,500,388,130.94/418,807.08
  6. Step 6: Final answer
    x = 201,764.47

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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.