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Finding the Fourth Proportional to 418,710.53, 628,066.10 and 103,167.44

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Solution

The fourth proportional to 418,710.53, 628,066.10 and 103,167.44 is: 154,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,710.53 : 628,066.10 = 103,167.44 : x
  2. Step 2: Convert to fraction form
    418,710.53/628,066.10 = 103,167.44/x
  3. Step 3: Cross multiply
    418,710.53x = 628,066.10 × 103,167.44
  4. Step 4: Simplify right side
    418,710.53x = 64,795,971,160.62
  5. Step 5: Solve for x
    x = 64,795,971,160.62/418,710.53
  6. Step 6: Final answer
    x = 154,751.23

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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.