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Finding the Fourth Proportional to 304,855.11, 420,683.22 and 168,878.25

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Solution

The fourth proportional to 304,855.11, 420,683.22 and 168,878.25 is: 233,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,855.11 : 420,683.22 = 168,878.25 : x
  2. Step 2: Convert to fraction form
    304,855.11/420,683.22 = 168,878.25/x
  3. Step 3: Cross multiply
    304,855.11x = 420,683.22 × 168,878.25
  4. Step 4: Simplify right side
    304,855.11x = 71,044,245,997.97
  5. Step 5: Solve for x
    x = 71,044,245,997.97/304,855.11
  6. Step 6: Final answer
    x = 233,042.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.