Home / 418,718.25-628,077.73-103,175.19

Finding the Fourth Proportional to 418,718.25, 628,077.73 and 103,175.19

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Solution

The fourth proportional to 418,718.25, 628,077.73 and 103,175.19 is: 154,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,718.25 : 628,077.73 = 103,175.19 : x
  2. Step 2: Convert to fraction form
    418,718.25/628,077.73 = 103,175.19/x
  3. Step 3: Cross multiply
    418,718.25x = 628,077.73 × 103,175.19
  4. Step 4: Simplify right side
    418,718.25x = 64,802,040,181.84
  5. Step 5: Solve for x
    x = 64,802,040,181.84/418,718.25
  6. Step 6: Final answer
    x = 154,762.87

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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.