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Finding the Fourth Proportional to 269,985, 404,758.80 and 112,331.52

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Solution

The fourth proportional to 269,985, 404,758.80 and 112,331.52 is: 168,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,985 : 404,758.80 = 112,331.52 : x
  2. Step 2: Convert to fraction form
    269,985/404,758.80 = 112,331.52/x
  3. Step 3: Cross multiply
    269,985x = 404,758.80 × 112,331.52
  4. Step 4: Simplify right side
    269,985x = 45,467,171,237.38
  5. Step 5: Solve for x
    x = 45,467,171,237.38/269,985
  6. Step 6: Final answer
    x = 168,406.29

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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.