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Finding the Fourth Proportional to 258,247.98, 387,394.29 and 71,259.48

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Solution

The fourth proportional to 258,247.98, 387,394.29 and 71,259.48 is: 106,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,247.98 : 387,394.29 = 71,259.48 : x
  2. Step 2: Convert to fraction form
    258,247.98/387,394.29 = 71,259.48/x
  3. Step 3: Cross multiply
    258,247.98x = 387,394.29 × 71,259.48
  4. Step 4: Simplify right side
    258,247.98x = 27,605,515,660.37
  5. Step 5: Solve for x
    x = 27,605,515,660.37/258,247.98
  6. Step 6: Final answer
    x = 106,895.38

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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.