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Finding the Fourth Proportional to 438,705.72, 605,454.75 and 266,583.96

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Solution

The fourth proportional to 438,705.72, 605,454.75 and 266,583.96 is: 367,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,705.72 : 605,454.75 = 266,583.96 : x
  2. Step 2: Convert to fraction form
    438,705.72/605,454.75 = 266,583.96/x
  3. Step 3: Cross multiply
    438,705.72x = 605,454.75 × 266,583.96
  4. Step 4: Simplify right side
    438,705.72x = 161,404,524,855.81
  5. Step 5: Solve for x
    x = 161,404,524,855.81/438,705.72
  6. Step 6: Final answer
    x = 367,910.69

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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.