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Finding the Fourth Proportional to 258,369.44, 387,554.02 and 71,380.92

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Solution

The fourth proportional to 258,369.44, 387,554.02 and 71,380.92 is: 107,071.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,369.44 : 387,554.02 = 71,380.92 : x
  2. Step 2: Convert to fraction form
    258,369.44/387,554.02 = 71,380.92/x
  3. Step 3: Cross multiply
    258,369.44x = 387,554.02 × 71,380.92
  4. Step 4: Simplify right side
    258,369.44x = 27,663,962,497.30
  5. Step 5: Solve for x
    x = 27,663,962,497.30/258,369.44
  6. Step 6: Final answer
    x = 107,071.34

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1.5x scale

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.