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Finding the Fourth Proportional to 423,998.49, 635,919.33 and 193,133.04

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Solution

The fourth proportional to 423,998.49, 635,919.33 and 193,133.04 is: 289,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,998.49 : 635,919.33 = 193,133.04 : x
  2. Step 2: Convert to fraction form
    423,998.49/635,919.33 = 193,133.04/x
  3. Step 3: Cross multiply
    423,998.49x = 635,919.33 × 193,133.04
  4. Step 4: Simplify right side
    423,998.49x = 122,817,033,397.66
  5. Step 5: Solve for x
    x = 122,817,033,397.66/423,998.49
  6. Step 6: Final answer
    x = 289,663.85

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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.