Home / 258,261.96-387,415.20-71,273.46

Finding the Fourth Proportional to 258,261.96, 387,415.20 and 71,273.46

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Solution

The fourth proportional to 258,261.96, 387,415.20 and 71,273.46 is: 106,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,261.96 : 387,415.20 = 71,273.46 : x
  2. Step 2: Convert to fraction form
    258,261.96/387,415.20 = 71,273.46/x
  3. Step 3: Cross multiply
    258,261.96x = 387,415.20 × 71,273.46
  4. Step 4: Simplify right side
    258,261.96x = 27,612,421,760.59
  5. Step 5: Solve for x
    x = 27,612,421,760.59/258,261.96
  6. Step 6: Final answer
    x = 106,916.33

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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.