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Finding the Fourth Proportional to 438,706.72, 605,456.13 and 266,584.96

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Solution

The fourth proportional to 438,706.72, 605,456.13 and 266,584.96 is: 367,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,706.72 : 605,456.13 = 266,584.96 : x
  2. Step 2: Convert to fraction form
    438,706.72/605,456.13 = 266,584.96/x
  3. Step 3: Cross multiply
    438,706.72x = 605,456.13 × 266,584.96
  4. Step 4: Simplify right side
    438,706.72x = 161,405,498,197.81
  5. Step 5: Solve for x
    x = 161,405,498,197.81/438,706.72
  6. Step 6: Final answer
    x = 367,912.07

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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.