Home / 418,982.16-628,474.53-103,439.10

Finding the Fourth Proportional to 418,982.16, 628,474.53 and 103,439.10

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Solution

The fourth proportional to 418,982.16, 628,474.53 and 103,439.10 is: 155,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,982.16 : 628,474.53 = 103,439.10 : x
  2. Step 2: Convert to fraction form
    418,982.16/628,474.53 = 103,439.10/x
  3. Step 3: Cross multiply
    418,982.16x = 628,474.53 × 103,439.10
  4. Step 4: Simplify right side
    418,982.16x = 65,008,839,756.12
  5. Step 5: Solve for x
    x = 65,008,839,756.12/418,982.16
  6. Step 6: Final answer
    x = 155,158.97

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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.