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Finding the Fourth Proportional to 415,586.84, 573,243.90 and 288,215.96

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Solution

The fourth proportional to 415,586.84, 573,243.90 and 288,215.96 is: 397,553.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,586.84 : 573,243.90 = 288,215.96 : x
  2. Step 2: Convert to fraction form
    415,586.84/573,243.90 = 288,215.96/x
  3. Step 3: Cross multiply
    415,586.84x = 573,243.90 × 288,215.96
  4. Step 4: Simplify right side
    415,586.84x = 165,218,040,952.64
  5. Step 5: Solve for x
    x = 165,218,040,952.64/415,586.84
  6. Step 6: Final answer
    x = 397,553.59

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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.